This changelog is used to track all major changes to Mopidy.

v2.2.2 (2018-12-29)

Bug fix release.

  • HTTP: Fix hang on exit due to change in Tornado v5.0 IOLoop. (Fixes: #1715, PR: #1716)
  • Files: Fix crash due to mix of text and bytes in paths that come from $XDG_CONFIG_HOME/user-dirs.dirs. (Fixes: #1676, #1725)

v2.2.1 (2018-10-15)

Bug fix release.

  • HTTP: Stop blocking connections where the network location part of the Origin header is empty, such as WebSocket connections originating from local files. (Fixes: #1711, PR: #1712)
  • HTTP: Add new config value http/csrf_protection which enables all CSRF protections introduced in Mopidy 2.2.0. It is enabled by default and should only be disabled by those users who are unable to set a Content-Type: application/json request header or cannot utilise the http/allowed_origins config value. (Fixes: #1713, PR: #1714)

v2.2.0 (2018-09-30)

Mopidy 2.2.0, a feature release, is out. It is a quite small release, featuring mostly minor fixes and improvements.

Most notably, this release introduces CSRF protection for both the HTTP and WebSocket RPC interfaces, and improves the file path checking in the M3U backend. The CSRF protection should stop attacks against local Mopidy servers from malicious websites, like what was demonstrated by Josef Gajdusek in #1659.

Since the release of 2.1.0, we’ve closed approximately 21 issues and pull requests through 133 commits by 22 authors.

  • Dependencies: Drop support for Tornado < 4.4. Though strictly a breaking change, this shouldn’t affect any supported systems as even Debian stable includes Tornado >= 4.4.
  • Core: Remove upper limit of 10000 tracks in tracklist. 10000 tracks is still the default limit as some MPD clients crash if the tracklist is longer, but it is now possible to set the core/max_tracklist_length config value as high as you want to. (Fixes: #1600, PR: #1666)
  • Core: Fix crash on library.lookup(uris=[]). (Fixes: #1619, PR: #1620)
  • Core: Define return value of playlists.delete() to be a bool, True on success, False otherwise. (PR: #1702)
  • M3U: Ignore all attempts at accessing files outside the m3u/playlist_dir. (Partly fixes: #1659, PR: #1702)
  • File: Change default ordering to show directories first, then files. (PR: #1595)
  • File: Fix extraneous encoding of path. (PR: #1611)
  • HTTP: Protect RPC and WebSocket interfaces against CSRF by blocking requests that originate from servers other than those specified in the new config value http/allowed_origins. An artifact of this is that all JSON-RPC requests must now always set the header Content-Type: application/json. (Partly fixes: #1659, PR: #1668)
  • MPD: Added idle to the list of available commands. (Fixes: #1593, PR: #1597)
  • MPD: Added Unix domain sockets for binding MPD to. (Fixes: #1531, PR: #1629)
  • MPD: Lookup track metadata for MPD load and listplaylistinfo. (Fixes: #1511, PR: #1621)
  • Ensure that decoding of OS errors with unknown encoding never crashes, but instead replaces unknown bytes with a replacement marker. (Fixes: #1599)
  • Set GLib program and application name, so that we show up as “Mopidy” in PulseAudio instead of “python …”. (PR: #1626)

v2.1.0 (2017-01-02)

Mopidy 2.1.0, a feature release, is finally out!

Since the release of 2.0.0, it has been quiet times in Mopidy circles. This is mainly caused by core developers moving from the enterprise to startups or into positions with more responsibility, and getting more kids. Of course, this has greatly decreased the amount of spare time available for open source work. But fear not, Mopidy is not dead. We’ve returned from year long periods with close to no activity before, and will hopefully do so again.

Despite all, we’ve closed or merged approximately 18 issues and pull requests through about 170 commits since the release of v2.0.1 back in August.

The major new feature in Mopidy 2.1 is support for restoring playback state and the current playlist after a restart. This feature was contributed by Jens Lütjen.

  • Dependencies: Drop support for Tornado < 3.2. Though strictly a breaking change, this shouldn’t have any effect on what systems we support, as Tornado 3.2 or newer is available from the distros that include GStreamer >= 1.2.3, which we already require.
  • Core: Mopidy restores its last state when started. Can be enabled by setting the config value core/restore_state to true.
  • Audio: Update scanner to handle sources such as RTSP. (Fixes: #1479)
  • Audio: The scanner set the date to and (Fixes: #1741)
  • File: Add new config value file/excluded_file_extensions.
  • Local: Skip hidden directories directly in media_dir. (Fixes: #1559, PR: #1555)
  • MPD: Fix MPD protocol for replay_gain_status command. The actual command remains unimplemented. (PR: #1520)
  • MPD: Add nextsong and nextsongid to the response of MPD status command. (Fixes: #1133, #1516, PR: #1523)
  • MPD: Fix inconsistent playlist state after playlist is emptied with repeat and consume mode turned on. (Fixes: #1512, PR: #1549)
  • Audio: Improve handling of duration in scanning. VBR tracks should fail less frequently and MMS works again. (Fixes: #1553, PR #1575, #1576, #1577)

v2.0.1 (2016-08-16)

Bug fix release.

  • Audio: Set soft-volume flag on GStreamer’s playbin element. This is the playbin’s default, but we managed to override it when configuring the playbin to only process audio. This should fix the “Volume/mute is not available” warning.
  • Audio: Fix buffer conversion. This fixes image extraction. (Fixes: #1469, PR: #1472)
  • Audio: Update scan logic to workaround GStreamer issue where tags and duration might only be available after we start playing. (Fixes: #935, #1453, #1474, #1480, PR: #1487)
  • Audio: Better handling of seek when position does not match the expected pending position. (Fixes: #1462, #1505, PR: #1496)
  • Audio: Handle bad date tags from audio, thanks to Mario Lang and Tom Parker who fixed this in parallel. (Fixes: #1506, PR: #1525, #1517)
  • Audio: Make sure scanner handles streams without a duration. (Fixes: #1526)
  • Audio: Ensure audio tags are never None. (Fixes: #1449)
  • Audio: Update to postpone sending tags if there is a pending track change. (Fixes: #1357, PR: #1538)
  • Core: Avoid endless loop if all tracks in the tracklist are unplayable and consume mode is off. (Fixes: #1221, #1454, PR: #1455)
  • Core: Correctly record the last position of a track when switching to another one. Particularly relevant for Mopidy-Scrobbler users, as before it was essentially unusable. (Fixes: #1456, PR: #1534)
  • Models: Fix encoding error if Identifier fields, like the musicbrainz_id model fields, contained non-ASCII Unicode data. (Fixes: #1508, PR: #1546)
  • File: Ensure path comparison is done between bytestrings only. Fixes crash where a file/media_dirs path contained non-ASCII characters. (Fixes: #1345, PR: #1493)
  • Stream: Fix milliseconds vs seconds mistake in timeout handling. (Fixes: #1521, PR: #1522)
  • Docs: Fix the rendering of mopidy.core.Core and docs. This should also contribute towards making the Mopidy Debian package build bit-by-bit reproducible. (Fixes: #1500)

v2.0.0 (2016-02-15)

Mopidy 2.0 is here!

Since the release of 1.1, we’ve closed or merged approximately 80 issues and pull requests through about 350 commits by 14 extraordinary people, including 10 newcomers. That’s about the same amount of issues and commits as between 1.0 and 1.1. The number of contributors is a bit lower but we didn’t have a real life sprint during this development cycle. Thanks to everyone who has contributed!

With the release of Mopidy 1.0 we promised that any extension working with Mopidy 1.0 should continue working with all Mopidy 1.x releases. Mopidy 2.0 is quite a friendly major release and will only break a single extension that we know of: Mopidy-Spotify. To ensure that everything continues working, please upgrade to Mopidy 2.0 and Mopidy-Spotify 3.0 at the same time.

No deprecated functionality has been removed in Mopidy 2.0.

The major features of Mopidy 2.0 are:

  • Gapless playback has been mostly implemented. It works as long as you don’t change tracks in the middle of a track or use previous and next. In a future release, previous and next will also become gapless. It is now quite easy to have Mopidy streaming audio over the network using Icecast. See the updated Streaming through Icecast docs for details of how to set it up and workarounds for the remaining issues.
  • Mopidy has upgraded from GStreamer 0.10 to 1.x. This has been in our backlog for more than three years. With this upgrade we’re ridding ourselves of years of GStreamer bugs that have been fixed in newer releases, we can get into Debian testing again, and we’ve removed the last major roadblock for running Mopidy on Python 3.


  • Mopidy now requires GStreamer >= 1.2.3, as we’ve finally ported from GStreamer 0.10. Since we’re requiring a new major version of our major dependency, we’re upping the major version of Mopidy too. (Fixes: #225)

Core API


Extension support

  • Log exception and continue if an extension crashes during setup. Previously, we let Mopidy crash if an extension’s setup crashed. (PR: #1337)

Local backend

  • Made local/data_dir really deprecated. This change breaks older versions of Mopidy-Local-SQLite and Mopidy-Local-Images.

M3U backend

  • Add m3u/base_dir for resolving relative paths in M3U files. (Fixes: #1428, PR: #1442)
  • Derive track name from file name for non-extended M3U playlists. (Fixes: #1364, PR: #1369)
  • Major refactoring of the M3U playlist extension. (Fixes: #1370 PR: #1386)
    • Add m3u/default_encoding and m3u/default_extension config values for improved text encoding support.
    • No longer scan playlist directory and parse playlists at startup or refresh. Similarly to the file extension, this now happens on request.
    • Use mopidy.models.Ref instances when reading and writing playlists. Therefore, Track.length is no longer stored in extended M3U playlists and #EXTINF runtime is always set to -1.
    • Improve reliability of playlist updates using the core playlist API by applying the write-replace pattern for file updates.

Stream backend

  • Make sure both lookup and playback correctly handle playlists and our blacklist support. (Fixes: #1445, PR: #1447)

MPD frontend

  • Implemented commands for modifying stored playlists:

    • playlistadd
    • playlistclear
    • playlistdelete
    • playlistmove
    • rename
    • rm
    • save

    (Fixes: #1014, PR: #1187, #1308, #1322)

  • Start songid counting at 1 instead of 0 to match the original MPD server.

  • Idle events are now emitted on seeked events. This fix means that clients relying on idle events now get notified about seeks. (Fixes: #1331, PR: #1347)

  • Idle events are now emitted on playlists_loaded events. This fix means that clients relying on idle events now get notified about playlist loads. (Fixes: #1331, PR: #1347)

  • Event handler for playlist_deleted has been unbroken. This unreported bug would cause the MPD frontend to crash preventing any further communication via the MPD protocol. (PR: #1347)


  • Require stype argument to mopidy.zeroconf.Zeroconf.
  • Use Avahi’s interface selection by default. (Fixes: #1283)
  • Use Avahi server’s hostname instead of socket.getfqdn() in service display name.


  • Removed warning if ~/.mopidy exists. We stopped using this location in 0.6, released in October 2011.
  • Removed warning if ~/.config/mopidy/ exists. We stopped using this settings file in 0.14, released in April 2013.
  • The on_event handler in our listener helper now catches exceptions. This means that any errors in event handling won’t crash the actor in question.
  • Catch errors when loading logging/config_file. (Fixes: #1320)
  • Breaking: Removed unused internal mopidy.internal.process.BaseThread. This breaks Mopidy-Spotify 1.4.0. Versions < 1.4.0 was already broken by Mopidy 1.1, while versions >= 2.0 doesn’t use this class.


  • Breaking: The audio scanner now returns ISO-8601 formatted strings instead of datetime objects for dates found in tags. Because of this change, we can now return years without months or days, which matches the semantics of the date fields in our data models.

  • Breaking:’s caps argument has changed format due to the upgrade from GStreamer 0.10 to GStreamer 1. As far as we know, this is only used by Mopidy-Spotify. As an example, with GStreamer 0.10 the Mopidy-Spotify caps was:

    audio/x-raw-int, endianness=(int)1234, channels=(int)2, width=(int)16,
    depth=(int)16, signed=(boolean)true, rate=(int)44100

    With GStreamer 1 this changes to:


    If your Mopidy backend uses set_appsrc(), please refer to GStreamer documentation for details on the new caps string format.

  • Breaking:’s capabilities argument is no longer in use and has been removed. As far as we know, this was only used by Mopidy-Spotify.

  • Duplicate seek events getting to appsrc based backends is now fixed. This should prevent seeking in Mopidy-Spotify from glitching. (Fixes: #1404)

  • Workaround crash caused by a race that does not seem to affect functionality. This should be fixed properly together with #1222. (Fixes: #1430, PR: #1438)

  • Add a new config option, audio/buffer_time, for setting the buffer time of the GStreamer queue. If you experience buffering before track changes, it may help to increase this. (Workaround for #1409)

  • tags_changed events are only emitted for fields that have changed. Previous behavior was to emit this for all fields received from GStreamer. (PR: #1439)


  • Add partial support for gapless playback. Gapless now works as long as you don’t change tracks or use next/previous. (PR: #1288)

    The Streaming through Icecast docs has been updated with the workarounds still needed to properly stream Mopidy audio through Icecast.

  • Core playback has been refactored to better handle gapless, and async state changes.

  • Tests have been updated to always use a core actor so async state changes don’t trip us up.

  • Seek events are now triggered when the seek completes. Previously the event was emitted when the seek was requested, not when it completed. Further changes have been made to make seek work correctly for gapless related corner cases. (Fixes: #1305 PR: #1346)

v1.1.2 (2016-01-18)

Bug fix release.

  • Main: Catch errors when loading the logging/config_file file. (Fixes: #1320)
  • Core: If changing to another track while the player is paused, the new track would not be added to the history or marked as currently playing. (Fixes: #1352, PR: #1356)
  • Core: Skips over unplayable tracks if the user attempts to change tracks while paused, like we already did if in playing state. (Fixes #1378, PR: #1379)
  • Core: Make lookup() ignore tracks with empty URIs. (Partly fixes: #1340, PR: #1381)
  • Core: Fix crash if backends emits events with wrong names or arguments. (Fixes: #1383)
  • Stream: If an URI is considered playable, don’t consider it as a candidate for playlist parsing. Just looking at MIME type prefixes isn’t enough, as for example Ogg Vorbis has the MIME type application/ogg. (Fixes: #1299)
  • Local: If the scan or clear commands are used on a library that does not exist, exit with an error. (Fixes: #1298)
  • MPD: Notify idling clients when a seek is performed. (Fixes: #1331)
  • MPD: Don’t return tracks with empty URIs. (Partly fixes: #1340, PR: #1343)
  • MPD: Add volume command that was reintroduced, though still as a deprecated command, in MPD 0.18 and is in use by some clients like mpc. (Fixes: #1393, PR: #1397)
  • Proxy: Handle case where proxy/port is either missing from config or set to an empty string. (PR: #1371)

v1.1.1 (2015-09-14)

Bug fix release.

  • Dependencies: Specify that we need Requests >= 2.0, not just any version. This ensures that we fail earlier if Mopidy is used with a too old Requests.
  • Core: Make mopidy.core.LibraryController.refresh() work for all backends with a library provider. Previously, it wrongly worked for all backends with a playlists provider. (Fixes: #1257)
  • Core: Respect core/cache_dir and core/data_dir config values added in 1.1.0 when creating the dirs Mopidy need to store data. This should not change the behavior for desktop users running Mopidy. When running Mopidy as a system service installed from a package which sets the core dir configs properly (e.g. Debian and Arch packages), this fix avoids the creation of a couple of directories that should not be used, typically /var/lib/mopidy/.local and /var/lib/mopidy/.cache. (Fixes: #1259, PR: #1266)
  • Core: Fix error in get_eot_tlid() docstring. (Fixes: #1269)
  • Audio: Add timeout parameter to scan(). (Part of: #1250, PR: #1281)
  • Extension support: Make get_cache_dir(), get_config_dir(), and get_data_dir() class methods, so they can be used without creating an instance of the Extension class. (Fixes: #1275)
  • Local: Deprecate local/data_dir and respect core/data_dir instead. This does not change the defaults for desktop users, only system services installed from packages that properly set core/data_dir, like the Debian and Arch packages. (Fixes: #1259, PR: #1266)
  • Local: Change default value of local/scan_flush_threshold from 1000 to 100 to shorten the time Mopidy-Local-SQLite blocks incoming requests while scanning the local library.
  • M3U: Changed default for the m3u/playlists_dir from $XDG_DATA_DIR/mopidy/m3u to unset, which now means the extension’s data dir. This does not change the defaults for desktop users, only system services installed from packages that properly set core/data_dir, like the Debian and Arch pakages. (Fixes: #1259, PR: #1266)
  • Stream: Expand nested playlists to find the stream URI. This used to work, but regressed in 1.1.0 with the extraction of stream playlist parsing from GStreamer to being handled by the Mopidy-Stream backend. (Fixes: #1250, PR: #1281)
  • Stream: If “file” is present in the stream/protocols config value and the Mopidy-File extension is enabled, we exited with an error because two extensions claimed the same URI scheme. We now log a warning recommending to remove “file” from the stream/protocols config, and then proceed startup. (Fixes: #1248, PR: #1254)
  • Stream: Fix bug in new playlist parser. A non-ASCII char in an urilist comment would cause a crash while parsing due to comparison of a non-ASCII bytestring with a Unicode string. (Fixes: #1265)
  • File: Adjust log levels when failing to expand $XDG_MUSIC_DIR into a real path. This usually happens when running Mopidy as a system service, and thus with a limited set of environment variables. (Fixes: #1249, PR: #1255)
  • File: When browsing files, we no longer scan the files to check if they’re playable. This makes browsing of the file hierarchy instant for HTTP clients, which do no scanning of the files’ metadata, and a bit faster for MPD clients, which no longer scan the files twice. (Fixes: #1260, PR: #1261)
  • File: Allow looking up metadata about any file:// URI, just like we did in Mopidy 1.0.x, where Mopidy-Stream handled file:// URIs. In Mopidy 1.1.0, Mopidy-File did not allow one to lookup files outside the directories listed in file/media_dir. This broke Mopidy-Local-SQLite when the local/media_dir directory was not within one of the file/media_dirs directories. For browsing of files, we still limit access to files inside the file/media_dir directories. For lookup, you can now read metadata for any file you know the path of. (Fixes: #1268, PR: #1273)
  • Audio: Fix timeout handling in scanner. This regression caused timeouts to expire before it should, causing scans to fail.
  • Audio: Update scanner to emit MIME type instead of an error when missing a plugin.

v1.1.0 (2015-08-09)

Mopidy 1.1 is here!

Since the release of 1.0, we’ve closed or merged approximately 65 issues and pull requests through about 400 commits by a record high 20 extraordinary people, including 14 newcomers. That’s less issues and commits than in the 1.0 release, but even more contributors, and a doubling of the number of newcomers. Thanks to everyone who has contributed, especially those that joined the sprint at EuroPython 2015 in Bilbao, Spain a couple of weeks ago!

As we promised with the release of Mopidy 1.0, any extension working with Mopidy 1.0 should continue working with all Mopidy 1.x releases. However, this release brings a lot stronger enforcement of our documented APIs. If an extension doesn’t use the APIs properly, it may no longer work. The advantage of this change is that Mopidy is now more robust against errors in extensions, and also provides vastly better error messages when extensions misbehave. This should make it easier to create quality extensions.

The major features of Mopidy 1.1 are:

  • Validation of the arguments to all core API methods, as well as all responses from backends and all data model attributes.
  • New bundled backend, Mopidy-File. It is similar to Mopidy-Local, but allows you to browse and play music from local disk without running a scan to index the music first. The drawback is that it doesn’t support searching.
  • The Mopidy-MPD server should now be up to date with the 0.19 version of the MPD protocol.


  • Mopidy now requires Requests.
  • Heads up: Porting from GStreamer 0.10 to 1.x and support for running Mopidy with Python 3.4+ is not far off on our roadmap.

Core API


  • Added type checks and other sanity checks to model construction and serialization. (Fixes: #865)
  • Memory usage for models has been greatly improved. We now have a lower overhead per instance by using slots, interned identifiers and automatically reuse instances. For the test data set this was developed against, a library of ~14.000 tracks, went from needing ~75MB to ~17MB. (Fixes: #348)
  • Added mopidy.models.Artist.sortname field that is mapped to musicbrainz-sortname tag. (Fixes: #940)


Extension support

Local backend

  • Filter out None from get_distinct() results. All returned results should be strings. (Fixes: #1202)

Stream backend

  • Move stream playlist parsing from GStreamer to the stream backend. (Fixes: #671)

File backend

The Mopidy-File backend is a new bundled backend. It is similar to Mopidy-Local since it works with local files, but it differs in a few key ways:

  • Mopidy-File lets you browse your media files by their file hierarchy.
  • It supports multiple media directories, all exposed under the “Files” directory when you browse your library with e.g. an MPD client.
  • There is no index of the media files, like the JSON or SQLite files used by Mopidy-Local. Thus no need to scan the music collection before starting Mopidy. Everything is read from the file system when needed and changes to the file system is thus immediately visible in Mopidy clients.
  • Because there is no index, there is no support for search.

Our long term plan is to keep this very simple file backend in Mopidy, as it has a well defined and limited scope, while splitting the more feature rich Mopidy-Local extension out to an independent project. (Fixes: #1004, PR: #1207)

M3U backend

  • Support loading UTF-8 encoded M3U files with the .m3u8 file extension. (PR: #1193)

MPD frontend

  • The MPD command count now ignores tracks with no length, which would previously cause a TypeError. (PR: #1192)
  • Concatenate multiple artists, composers and performers using the “A;B” format instead of “A, B”. This is a part of updating our protocol implementation to match MPD 0.19. (PR: #1213)
  • Add “not implemented” skeletons of new commands in the MPD protocol version 0.19:
    • Current playlist:
      • rangeid
      • addtagid
      • cleartagid
    • Mounts and neighbors:
      • mount
      • unmount
      • listmounts
      • listneighbors
    • Music DB:
      • listfiles
  • Track data now include the Last-Modified field if set on the track model. (Fixes: #1218, PR: #1219)
  • Implement tagtypes MPD command. (PR: #1235)
  • Exclude empty tags fields from metadata output. (Fixes: #1045, PR: #1235)
  • Implement protocol extensions to output Album URIs and Album Images when outputting track data to clients. (PR: #1230)
  • The MPD commands lsinfo and listplaylists are now implemented using the as_list() method, which retrieves a lot less data and is thus much faster than the deprecated get_playlists(). The drawback is that the Last-Modified timestamp is not available through this method, and the timestamps in the MPD command responses are now always set to the current time.

Internal changes

  • Tests have been cleaned up to stop using deprecated APIs where feasible. (Partial fix: #1083, PR: #1090)

v1.0.8 (2015-07-22)

Bug fix release.

  • Fix reversal of Title and Name in MPD protocol (Fixes: #1212 PR: #1214)
  • Fix crash if an M3U file in the m3u/playlist_dir directory has a file name not decodable with the current file system encoding. (Fixes: #1209)

v1.0.7 (2015-06-26)

Bug fix release.

  • Fix error in the MPD command list title .... The error was introduced in v1.0.6.

v1.0.6 (2015-06-25)

Bug fix release.

v1.0.5 (2015-05-19)

Bug fix release.

  • Core: Add workaround for playlist providers that do not support creating playlists. (Fixes: #1162, PR #1165)
  • M3U: Fix encoding error when saving playlists with non-ASCII track titles. (Fixes: #1175, PR #1176)

v1.0.4 (2015-04-30)

Bug fix release.

  • Audio: Since all previous attempts at tweaking the queuing for #1097 seems to break things in subtle ways for different users. We are giving up on tweaking the defaults and just going to live with a bit more lag on software volume changes. (Fixes: #1147)

v1.0.3 (2015-04-28)

Bug fix release.

  • HTTP: Another follow-up to the Tornado <3.0 fixing. Since the tests aren’t run for Tornado 2.3 we didn’t catch that our previous fix wasn’t sufficient. (Fixes: #1153, PR: #1154)
  • Audio: Follow-up fix for #1097 still exhibits issues for certain setups. We are giving this get an other go by setting the buffer size to maximum 100ms instead of a fixed number of buffers. (Addresses: #1147, PR: #1154)

v1.0.2 (2015-04-27)

Bug fix release.

  • HTTP: Make event broadcasts work with Tornado 2.3 again. The threading fix in v1.0.1 broke this.
  • Audio: Fix for #1097 tuned down the buffer size in the queue. Turns out this can cause distortions in certain cases. Give this an other go with a more generous buffer size. (Addresses: #1147, PR: #1152)
  • Audio: Make sure mute events get emitted by software mixer. (Fixes: #1146, PR: #1152)

v1.0.1 (2015-04-23)

Bug fix release.

  • Core: Make the new history controller available for use. (Fixes: mopidy.js#6)
  • Audio: Software volume control has been reworked to greatly reduce the delay between changing the volume and the change taking effect. (Fixes: #1097, PR: #1101)
  • Audio: As a side effect of the previous bug fix, software volume is no longer tied to the PulseAudio application volume when using pulsesink. This behavior was confusing for many users and doesn’t work well with the plans for multiple outputs.
  • Audio: Update scanner to decode all media it finds. This should fix cases where the scanner hangs on non-audio files like video. The scanner will now also let us know if we found any decodeable audio. (Fixes: #726, PR: issue:1124)
  • HTTP: Fix threading bug that would cause duplicate delivery of WS messages. (PR: #1127)
  • MPD: Fix case where a playlist that is present in both browse and as a listed playlist breaks the MPD frontend protocol output. (Fixes #1120, PR: #1142)

v1.0.0 (2015-03-25)

Three months after our fifth anniversary, Mopidy 1.0 is finally here!

Since the release of 0.19, we’ve closed or merged approximately 140 issues and pull requests through more than 600 commits by a record high 19 extraordinary people, including seven newcomers. Thanks to everyone who has contributed!

For the longest time, the focus of Mopidy 1.0 was to be another incremental improvement, to be numbered 0.20. The result is still very much an incremental improvement, with lots of small and larger improvements across Mopidy’s functionality.

The major features of Mopidy 1.0 are:

  • Semantic Versioning. We promise to not break APIs before Mopidy 2.0. A Mopidy extension working with Mopidy 1.0 should continue to work with all Mopidy 1.x releases.
  • Preparation work to ease migration to a cleaned up and leaner core API in Mopidy 2.0, and to give us some of the benefits of the cleaned up core API right away.
  • Preparation work to enable gapless playback in an upcoming 1.x release.


Since the previous release there are no changes to Mopidy’s dependencies. However, porting from GStreamer 0.10 to 1.x and support for running Mopidy with Python 3.4+ is not far off on our roadmap.

Core API

In the API used by all frontends and web extensions there is lots of methods and arguments that are now deprecated in preparation for the next major release. With the exception of some internals that leaked out in the playback controller, no core APIs have been removed in this release. In other words, most clients should continue to work unchanged when upgrading to Mopidy 1.0. Though, it is strongly encouraged to review any use of the deprecated parts of the API as those parts will be removed in Mopidy 2.0.

  • Deprecated: Deprecate all Python properties in the core API. The previously undocumented getter and setter methods are now the official API. This aligns the Python API with the WebSocket/JavaScript API. Python frontends needs to be updated. WebSocket/JavaScript API users are not affected. (Fixes: #952)
  • Add mopidy.core.HistoryController which keeps track of what tracks have been played. (Fixes: #423, #1056, PR: #803, #1063)
  • Add mopidy.core.MixerController which keeps track of volume and mute. (Fixes: #962)

Core library controller

Core playlist controller

Core tracklist controller

  • Removed: The following methods were documented as internal. They are now fully private and unavailable outside the core actor. (Fixes: #1058, PR: #1062)
    • mopidy.core.TracklistController.mark_played()
    • mopidy.core.TracklistController.mark_playing()
    • mopidy.core.TracklistController.mark_unplayable()
  • Add uris argument to mopidy.core.TracklistController.add() which allows for simpler addition of multiple URIs to the tracklist. (Fixes: #1060, PR: #1065)

Core playback controller

Backend API

In the API implemented by all backends there have been way fewer but somewhat more drastic changes with some methods removed and new ones being required for certain functionality to continue working. Most backends were already updated to be compatible with Mopidy 1.0 before the release. New versions of the backends will be released shortly after Mopidy itself.

Backend library providers

Backend playlist providers

Backend playback providers



  • Make the mopidy command print a friendly error message if the gobject Python module cannot be imported. (Fixes: #836)
  • Add support for repeating the -v argument four times to set the log level for all loggers to the lowest possible value, including log records at levels lower than DEBUG too.
  • Add path to the current mopidy executable to the output of mopidy deps. This make it easier to see that a user is using pip-installed Mopidy instead of APT-installed Mopidy without asking for which mopidy output.


  • Add support for the log level value all to the loglevels configurations. This can be used to show absolutely all log records, including those at custom levels below DEBUG.
  • Add debug logging of unknown sections. (Fixes: #694, PR: #1002)


  • Add custom log level TRACE (numerical level 5), which can be used by Mopidy and extensions to log at an even more detailed level than DEBUG.
  • Add support for per logger color overrides. (Fixes: #808, PR: #1005)

Local backend

  • Improve error logging for scanner. (Fixes: #856, PR: #874)
  • Add symlink support with loop protection to file finder. (Fixes: #858, PR: #874)
  • Add --force option for mopidy local scan for forcing a full rescan of the library. (Fixes: #910, PR: #1010)
  • Stop ignoring offset and limit in searches when using the default JSON backed local library. (Fixes: #917, PR: #949)
  • Removed double triggering of playlists_loaded event. (Fixes: #998, PR: #999)
  • Cleanup and refactoring of local playlist code. Preserves playlist names better and fixes bug in deletion of playlists. (Fixes: #937, PR: #995 and rebased into #1000)
  • Sort local playlists by name. (Fixes: #1026, PR: #1028)
  • Moved playlist support out to a new extension, Mopidy-M3U.
  • Deprecated: The config value local/playlists_dir is no longer in use and can be removed from your config.

Local library API

Stream backend

  • Add support for HTTP proxies when doing initial metadata lookup for a stream. (Fixes #390, PR: #982)
  • Add basic tests for the stream library provider.

M3U backend

  • Mopidy-M3U is a new bundled backend. It provides the same M3U support as was previously part of the local backend. See Migrating from Mopidy-Local playlists for how to migrate your local playlists to work with the M3U backend. (Fixes: #1054, PR: #1066)
  • In playlist names, replace “/”, which are illegal in M3U file names, with “|”. (PR: #1084)

MPD frontend

  • Add support for blacklisting MPD commands. This is used to prevent clients from using listall and listallinfo which recursively lookup the entire “database”. If you insist on using a client that needs these commands change mpd/command_blacklist.
  • Start setting the Name field with the stream title when listening to radio streams. (Fixes: #944, PR: #1030)
  • Enable browsing of artist references, in addition to albums and playlists. (PR: #884)
  • Switch the list command over to using the new method mopidy.core.LibraryController.get_distinct() for increased performance. (Fixes: #913)
  • In stored playlist names, replace “/”, which are illegal, with “|” instead of a whitespace. Pipes are more similar to forward slash.
  • Share a single mapping between names and URIs across all MPD sessions. (Fixes: #934, PR: #968)
  • Add support for toggleoutput command. (PR: #1015)
  • The mixrampdb and mixrampdelay commands are now known to Mopidy, but are not implemented. (PR: #1015)
  • Fix crash on socket error when using a locale causing the exception’s error message to contain characters not in ASCII. (Fixes: issue:971, PR: #1044)

HTTP frontend

  • Deprecated: Deprecated the http/static_dir config. Please make your web clients pip-installable Mopidy extensions to make it easier to install for end users.
  • Prevent a race condition in WebSocket event broadcasting from crashing the web server. (PR: #1020)


  • Add support for disabling volume control in Mopidy entirely by setting the configuration audio/mixer to none. (Fixes: #936, PR: #1015, #1035)


  • Removed: Support for visualizers and the audio/visualizer config value. The feature was originally added as a workaround for all the people asking for ncmpcpp visualizer support, and since we could get it almost for free thanks to GStreamer. But, this feature did never make sense for a server such as Mopidy.
  • Deprecated: Deprecated Pass a None buffer to to end the stream. This should only affect Mopidy-Spotify.
  • Add Notifies core when new tags are found.
  • Add for looking up the current tags of the playing media.
  • Internal code cleanup within audio subsystem:
    • Started splitting audio code into smaller better defined pieces.
    • Improved GStreamer related debug logging.
    • Provide better error messages for missing plugins.
    • Add foundation for trying to re-add multiple output support.
    • Add internal helper for converting GStreamer data types to Python.
    • Reduce scope of audio scanner to just find tags and duration. Modification time, URI and minimum length handling are now outside of this class.
    • Update scanner to operate with milliseconds for duration.
    • Update scanner to use a custom source, typefind and decodebin. This allows us to detect playlists before we try to decode them.
    • Refactored scanner to create a new pipeline per track, this is needed as reseting decodebin is much slower than tearing it down and making a fresh one.
  • Move and rename helper for converting tags to tracks.
  • Ignore albums without a name when converting tags to tracks.
  • Support UTF-8 in M3U playlists. (Fixes: #853)
  • Add workaround for volume not persisting across tracks on OS X. (Issue: #886, PR: #958)
  • Improved missing plugin error reporting in scanner. (PR: #1033)
  • Introduced a new return type for the scanner, a named tuple with uri, tags, duration, seekable and mime. (PR: #1033)
  • Added support for checking if the media is seekable, and getting the initial MIME type guess. (PR: #1033)

Mopidy.js client library

This version has been released to npm as Mopidy.js v0.5.0.

  • Reexport When.js library as Mopidy.when, to make it easily available to users of Mopidy.js. (Fixes: mopidy.js#1)
  • Default to wss:// as the WebSocket protocol if the page is hosted on https://. This has no effect if the webSocketUrl setting is specified. (Pull request: mopidy.js#2)
  • Upgrade dependencies.


v0.19.5 (2014-12-23)

Today is Mopidy’s five year anniversary. We’re celebrating with a bugfix release and are looking forward to the next five years!

  • Config: Support UTF-8 in extension’s default config. If an extension with non-ASCII characters in its default config was installed, and Mopidy didn’t already have a config file, Mopidy would crashed when trying to create the initial config file based on the default config of all available extensions. (Fixes:
  • Extensions: Fix crash when unpacking data from pkg_resources.VersionConflict created with a single argument. (Fixes: #911)
  • Models: Hide empty collections from repr() representations.
  • Models: Field values are no longer stored on the model instance when the value matches the default value for the field. This makes two models equal when they have a field which in one case is implicitly set to the default value and in the other case explicitly set to the default value, but with otherwise equal fields. (Fixes: #837)
  • Models: Changed the default value of mopidy.models.Album.num_tracks, mopidy.models.Track.track_no, and mopidy.models.Track.last_modified from 0 to None.
  • Core: When skipping to the next track in consume mode, remove the skipped track from the tracklist. This is consistent with the original MPD server’s behavior. (Fixes: #902)
  • Local: Fix scanning of modified files. (PR: #904)
  • MPD: Re-enable browsing of empty directories. (PR: #906)
  • MPD: Remove track comments from responses. They are not included by the original MPD server, and this works around #881. (PR: #882)
  • HTTP: Errors while starting HTTP apps are logged instead of crashing the HTTP server. (Fixes: #875)

v0.19.4 (2014-09-01)

Bug fix release.

  • Configuration: mopidy --config now supports directories.
  • Logging: Fix that some loggers would be disabled if logging/config_file was set. (Fixes: #740)
  • Quit process with exit code 1 when stopping because of a backend, frontend, or mixer initialization error.
  • Backend API: Update mopidy.backend.LibraryProvider.browse() signature and docs to match how the core use the backend’s browse method. (Fixes: #833)
  • Local library API: Add mopidy.local.Library.ROOT_DIRECTORY_URI constant for use by implementors of mopidy.local.Library.browse(). (Related to: #833)
  • HTTP frontend: Guard against double close of WebSocket, which causes an AttributeError on Tornado < 3.2.
  • MPD frontend: Make the list command return albums when sending 3 arguments. This was incorrectly returning artists after the MPD command changes in 0.19.0. (Fixes: #817)
  • MPD frontend: Fix a race condition where two threads could try to free the same data simultaneously. (Fixes: #781)

v0.19.3 (2014-08-03)

Bug fix release.

  • Audio: Fix negative track length for radio streams. (Fixes: #662, PR: #796)
  • Audio: Tell GStreamer to not pick Jack sink. (Fixes: #604)
  • Zeroconf: Fix discovery by adding .local to the announced hostname. (PR: #795)
  • Zeroconf: Fix intermittent DBus/Avahi exception.
  • Extensions: Fail early if trying to setup an extension which doesn’t implement the mopidy.ext.Extension.setup() method. (Fixes: #813)

v0.19.2 (2014-07-26)

Bug fix release, directly from the Mopidy development sprint at EuroPython 2014 in Berlin.

  • Audio: Make audio/mixer_volume work on the software mixer again. This was broken with the mixer changes in 0.19.0. (Fixes: #791)
  • HTTP frontend: When using Tornado 4.0, allow WebSocket requests from other hosts. (Fixes: #788)
  • MPD frontend: Fix crash when MPD commands are called with the wrong number of arguments. This was broken with the MPD command changes in 0.19.0. (Fixes: #789)

v0.19.1 (2014-07-23)

Bug fix release.

  • Dependencies: Mopidy now requires Tornado >= 2.3, instead of >= 3.1. This should make Mopidy continue to work on Debian/Raspbian stable, where Tornado 2.3 is the newest version available.
  • HTTP frontend: Add missing string interpolation placeholder.
  • Development: mopidy --version and mopidy.core.Core.get_version() now returns the correct version when Mopidy is run from a Git repo other than Mopidy’s own. (Related to #706)

v0.19.0 (2014-07-21)

The focus of 0.19 have been on improving the MPD implementation, replacing GStreamer mixers with our own mixer API, and on making web clients installable with pip, like any other Mopidy extension.

Since the release of 0.18, we’ve closed or merged 53 issues and pull requests through about 445 commits by 12 people, including five new guys. Thanks to everyone that has contributed!


  • Mopidy now requires Tornado >= 3.1.
  • Mopidy no longer requires CherryPy or ws4py. Previously, these were optional dependencies required for the HTTP frontend to work.

Backend API

  • Breaking change: Imports of the backend API from mopidy.backends no longer works. The new API introuced in v0.18 is now required. Most extensions already use the new API location.


  • The mopidy-convert-config tool for migrating the configuration file used by Mopidy up until 0.14 to the new config file format has been removed after over a year of trusty service. If you still need to convert your old configuration file, do so using and older release, like Mopidy 0.18, or migrate the configuration to the new format by hand.


  • Add optional=True support to mopidy.config.Boolean.


  • Fix proper decoding of exception messages that depends on the user’s locale.
  • Colorize logs depending on log level. This can be turned off with the new logging/color configuration. (Fixes: #772)

Extension support

  • Breaking change: Removed the Extension methods that were deprecated in 0.18: get_backend_classes(), get_frontend_classes(), and register_gstreamer_elements(). Use mopidy.ext.Extension.setup() instead, as most extensions already do.


  • Breaking change: Removed support for GStreamer mixers. GStreamer 1.x does not support volume control, so we changed to use software mixing by default in v0.17.0. Now, we’re removing support for all other GStreamer mixers and are reintroducing mixers as something extensions can provide independently of GStreamer. (Fixes: #665, PR: #760)
  • Breaking change: Changed the audio/mixer config value to refer to Mopidy mixer extensions instead of GStreamer mixers. The default value, software, still has the same behavior. All other values will either no longer work or will at the very least require you to install an additional extension.
  • Changed the audio/mixer_volume config value behavior from affecting GStreamer mixers to affecting Mopidy mixer extensions instead. The end result should be the same without any changes to this config value.
  • Deprecated the audio/mixer_track config value. This config value is no longer in use. Mixer extensions that need additional configuration handle this themselves.
  • Use Proxy configuration when streaming media from the Internet. (Partly fixing #390)
  • Fix proper decoding of exception messages that depends on the user’s locale.
  • Fix recognition of ASX and XSPF playlists with tags in all caps or with carriage return line endings. (Fixes: #687)
  • Support simpler ASX playlist variant with <ENTRY> elements without children.
  • Added target_state attribute to the audio layer’s state_changed() event. Currently, it is None except when we’re paused because of buffering. Then the new field exposes our target state after buffering has completed.


  • Added new mopidy.mixer.Mixer API which can be implemented by extensions.
  • Created a bundled extension, Mopidy-SoftwareMixer, for controlling volume in software in GStreamer’s pipeline. This is Mopidy’s default mixer. To use this mixer, set the audio/mixer config value to software.
  • Created an external extension, Mopidy-ALSAMixer, for controlling volume with hardware through ALSA. To use this mixer, install the extension, and set the audio/mixer config value to alsamixer.

HTTP frontend

  • CherryPy and ws4py have been replaced with Tornado. This will hopefully reduce CPU usage on OS X (#445) and improve error handling in corner cases, like when returning from suspend (#718).

  • Added support for packaging web clients as Mopidy extensions and installing them using pip. See the HTTP server side API for details. (Fixes: #440)

  • Added web page at /mopidy/ which lists all web clients installed as Mopidy extensions. (Fixes: #440)

  • Added support for extending the HTTP frontend with additional server side functionality. See HTTP server side API for details.

  • Exposed the core API using HTTP POST requests with JSON-RPC payloads at /mopidy/rpc. This is the same JSON-RPC interface as is exposed over the WebSocket at /mopidy/ws, so you can run any core API command.

    The HTTP POST interfaces does not give you access to events from Mopidy, like the WebSocket does. The WebSocket interface is still recommended for web clients. The HTTP POST interface may be easier to use for simpler programs, that just needs to query the currently playing track or similar. See HTTP POST API for details.

  • If Zeroconf is enabled, we now announce the _mopidy-http._tcp service in addition to _http._tcp. This is to make it easier to automatically find Mopidy’s HTTP server among other Zeroconf-published HTTP servers on the local network.

Mopidy.js client library

This version has been released to npm as Mopidy.js v0.4.0.

  • Update Mopidy.js to use when.js 3. If you maintain a Mopidy client, you should review the differences between when.js 2 and 3 and the when.js debugging guide.
  • All of Mopidy.js’ promise rejection values are now of the Error type. This ensures that all JavaScript VMs will show a useful stack trace if a rejected promise’s value is used to throw an exception. To allow catch clauses to handle different errors differently, server side errors are of the type Mopidy.ServerError, and connection related errors are of the type Mopidy.ConnectionError.
  • Add support for method calls with by-name arguments. The old calling convention, by-position-only, is still the default, but this will change in the future. A warning is logged to the console if you don’t explicitly select a calling convention. See the Mopidy.js JavaScript library docs for details.

MPD frontend

  • Proper command tokenization for MPD requests. This replaces the old regex based system with an MPD protocol specific tokenizer responsible for breaking requests into pieces before the handlers have at them. (Fixes: #591 and #592)
  • Updated command handler system. As part of the tokenizer cleanup we’ve updated how commands are registered and making it simpler to create new handlers.
  • Simplified a bunch of handlers. All the “browse” type commands now use a common browse helper under the hood for less repetition. Likewise the query handling of “search” commands has been somewhat simplified.
  • Adds placeholders for missing MPD commands, preparing the way for bumping the protocol version once they have been added.
  • Respond to all pending requests before closing connection. (PR: #722)
  • Stop incorrectly catching LookupError in command handling. (Fixes: #741)
  • Browse support for playlists and albums has been added. (PR: #749, #754)
  • The lsinfo command now returns browse results before local playlists. This is helpful as not all clients sort the returned items. (PR: #755)
  • Browse now supports different entries with identical names. (PR: #762)
  • Search terms that are empty or consists of only whitespace are no longer included in the search query sent to backends. (PR: #758)

Local backend

  • The JSON local library backend now logs a friendly message telling you about mopidy local scan if you don’t have a local library cache. (Fixes: #711)
  • The local scan command now use multiple threads to walk the file system and check files’ modification time. This speeds up scanning, escpecially when scanning remote file systems over e.g. NFS.
  • the local scan command now creates necessary folders if they don’t already exist. Previously, this was only done by the Mopidy server, so doing a local scan before running the server the first time resulted in a crash. (Fixes: #703)
  • Fix proper decoding of exception messages that depends on the user’s locale.

Stream backend

  • Add config value stream/metadata_blacklist to blacklist certain URIs we should not open to read metadata from before they are opened for playback. This is typically needed for services that invalidate URIs after a single use. (Fixes: #660)

v0.18.3 (2014-02-16)

Bug fix release.

  • Fix documentation build.

v0.18.2 (2014-02-16)

Bug fix release.

  • We now log warnings for wrongly configured extensions, and clearly label them in mopidy config, but does no longer stop Mopidy from starting because of misconfigured extensions. (Fixes: #682)
  • Fix a crash in the server side WebSocket handler caused by connection problems with clients. (Fixes: #428, #571)
  • Fix the time_position field of the track_playback_ended event, which has been always 0 since v0.18.0. This made scrobbles by Mopidy-Scrobbler not be persisted by, because Mopidy reported that you listened to 0 seconds of each track. (Fixes: #674)
  • Fix the log setup so that it is possible to increase the amount of logging from a specific logger using the loglevels config section. (Fixes: #684)
  • Serialization of Playlist models with the last_modified field set to a datetime.datetime instance did not work. The type of mopidy.models.Playlist.last_modified has been redefined from a datetime.datetime instance to the number of milliseconds since Unix epoch as an integer. This makes serialization of the time stamp simpler.
  • Minor refactor of the MPD server context so that Mopidy’s MPD protocol implementation can easier be reused. (Fixes: #646)
  • Network and signal handling has been updated to play nice on Windows systems.

v0.18.1 (2014-01-23)

Bug fix release.

  • Disable extension instead of crashing if a dependency has the wrong version. (Fixes: #657)
  • Make logging work to both console, debug log file, and any custom logging setup from logging/config_file at the same time. (Fixes: #661)

v0.18.0 (2014-01-19)

The focus of 0.18 have been on two fronts: the local library and browsing.

First, the local library’s old tag cache file used for storing the track metadata scanned from your music collection has been replaced with a far simpler implementation using JSON as the storage format. At the same time, the local library have been made replaceable by extensions, so you can now create extensions that use your favorite database to store the metadata.

Second, we’ve finally implemented the long awaited “file system” browsing feature that you know from MPD. It is supported by both the MPD frontend and the local and Spotify backends. It is also used by the new Mopidy-Dirble extension to provide you with a directory of Internet radio stations from all over the world.

Since the release of 0.17, we’ve closed or merged 49 issues and pull requests through about 285 commits by 11 people, including six new guys. Thanks to everyone that has contributed!

Core API

Backend API

Frontend API

  • The dummy backend used for testing many frontends have moved from mopidy.backends.dummy to mopidy.backend.dummy. (PR: #984)


  • Reduce amount of logging from dependencies when using mopidy -v. (Fixes: #593)
  • Add support for additional logging verbosity levels with mopidy -vv and mopidy -vvv which increases the amount of logging from dependencies. (Fixes: #593)


  • The default for the mopidy --config option has been updated to include $XDG_CONFIG_DIRS in addition to $XDG_CONFIG_DIR. (Fixes #431)
  • Added support for deprecating config values in order to allow for graceful removal of the no longer used config value local/tag_cache_file.

Extension support

  • Switched to using a registry model for classes provided by extension. This allows extensions to be extended by other extensions, as needed by for example pluggable libraries for the local backend. See mopidy.ext.Registry for details. (Fixes #601)
  • Added the new method mopidy.ext.Extension.setup(). This method replaces the now deprecated get_backend_classes(), get_frontend_classes(), and register_gstreamer_elements().


  • Added audio/mixer_volume to set the initial volume of mixers. This is especially useful for setting the software mixer volume to something else than the default 100%. (Fixes: #633)

Local backend


After upgrading to Mopidy 0.18 you must run mopidy local scan to reindex your local music collection. This is due to the change of storage format.

  • Added support for browsing local directories in Mopidy’s virtual file system.
  • Finished the work on creating pluggable libraries. Users can now reconfigure Mopidy to use alternate library providers of their choosing for local files. (Fixes issue #44, partially resolves #397, and causes a temporary regression of #527.)
  • Switched default local library provider from a “tag cache” file that closely resembled the one used by the original MPD server to a compressed JSON file. This greatly simplifies our library code and reuses our existing model serialization code, as used by the HTTP API and web clients.
  • Removed our outdated and bug-ridden “tag cache” local library implementation.
  • Added the config value local/library to select which library to use. It defaults to json, which is the only local library bundled with Mopidy.
  • Added the config value local/data_dir to have a common config for where to store local library data. This is intended to avoid every single local library provider having to have it’s own config value for this.
  • Added the config value local/scan_flush_threshold to control how often to tell local libraries to store changes when scanning local music.

Streaming backend

  • Add live lookup of URI metadata. (Fixes #540)
  • Add support for extended M3U playlist, meaning that basic track metadata stored in playlists will be used by Mopidy.

HTTP frontend

  • Upgrade Mopidy.js dependencies and add support for using Mopidy.js with Browserify. This version has been released to npm as Mopidy.js v0.2.0. (Fixes: #609)

MPD frontend

  • Make the lsinfo, listall, and listallinfo commands support browsing of Mopidy’s virtual file system. (Fixes: #145)
  • Empty commands now return a ACK [5@0] {} No command given error instead of OK. This is consistent with the original MPD server implementation.

Internal changes

  • Events from the audio actor, backends, and core actor are now emitted asyncronously through the GObject event loop. This should resolve the issue that has blocked the merge of the EOT-vs-EOS fix for a long time.

v0.17.0 (2013-11-23)

The focus of 0.17 has been on introducing subcommands to the mopidy command, making it possible for extensions to add subcommands of their own, and to improve the default config file when starting Mopidy the first time. In addition, we’ve grown support for Zeroconf publishing of the MPD and HTTP servers, and gotten a much faster scanner. The scanner now also scans some additional tags like composers and performers.

Since the release of 0.16, we’ve closed or merged 22 issues and pull requests through about 200 commits by five people, including one new contributor.


  • Switched to subcommands for the mopidy command , this implies the following changes: (Fixes: #437)

    Old command New command
    mopidy –show-deps mopidy deps
    mopidy –show-config mopidy config
    mopidy-scan mopidy local scan
  • Added hooks for extensions to create their own custom subcommands and converted mopidy-scan as a first user of the new API. (Fixes: #436)


  • When mopidy is started for the first time we create an empty $XDG_CONFIG_DIR/mopidy/mopidy.conf file. We now populate this file with the default config for all installed extensions so it’ll be easier to set up Mopidy without looking through all the documentation for relevant config values. (Fixes: #467)

Core API

  • The Track model has grown fields for composers, performers, genre, and comment.
  • The search field track has been renamed to track_name to avoid confusion with track_no. (Fixes: #535)
  • The signature of the tracklist’s filter() and remove() methods have changed. Previously, they expected e.g. tracklist.filter(tlid=17). Now, the value must always be a list, e.g. tracklist.filter(tlid=[17]). This change allows you to get or remove multiple tracks with a single call, e.g. tracklist.remove(tlid=[1, 2, 7]). This is especially useful for web clients, as requests can be batched. This also brings the interface closer to the library’s find_exact() and search() methods.


  • Change default volume mixer from autoaudiomixer to software. GStreamer 1.x does not support volume control, so we’re changing to use software mixing by default, as that may be the only thing we’ll support in the future when we upgrade to GStreamer 1.x.

Local backend

  • Library scanning has been switched back from GStreamer’s discoverer to our custom implementation due to various issues with GStreamer 0.10’s built in scanner. This also fixes the scanner slowdown. (Fixes: #565)
  • When scanning, we no longer default the album artist to be the same as the track artist. Album artist is now only populated if the scanned file got an explicit album artist set.
  • The scanner will now extract multiple artists from files with multiple artist tags.
  • The scanner will now extract composers and performers, as well as genre, bitrate, and comments. (Fixes: #577)
  • Fix scanner so that time of last modification is respected when deciding which files can be skipped when scanning the music collection for changes.
  • The scanner now ignores the capitalization of file extensions in local/excluded_file_extensions, so you no longer need to list both .jpg and .JPG to ignore JPEG files when scanning. (Fixes: #525)
  • The scanner now by default ignores *.nfo and *.html files too.

MPD frontend

  • The MPD service is now published as a Zeroconf service if avahi-daemon is running on the system. Some MPD clients will use this to present Mopidy as an available server on the local network without needing any configuration. See the mpd/zeroconf config value to change the service name or disable the service. (Fixes: #39)
  • Add support for composer, performer, comment, genre, and performer. These tags can be used with list ..., search ..., and find ... and their variants, and are supported in the any tag also
  • The bitrate field in the status response is now always an integer. This follows the behavior of the original MPD server. (Fixes: #577)

HTTP frontend

  • The HTTP service is now published as a Zeroconf service if avahi-daemon is running on the system. Some browsers will present HTTP Zeroconf services on the local network as “local sites” bookmarks. See the http/zeroconf config value to change the service name or disable the service. (Fixes: #39)


  • The mopidy process now registers it’s GObject event loop as the default eventloop for dbus-python. (Fixes: mopidy-mpris#2)

v0.16.1 (2013-11-02)

This is very small release to get Mopidy’s Debian package ready for inclusion in Debian.


  • Fix removal of last dir level in paths to dependencies in mopidy --show-deps output.
  • Add manpages for all commands.

Local backend

  • Fix search filtering by track number that was added in 0.16.0.

MPD frontend

  • Add support for list "albumartist" ... which was missed when find and search learned to handle albumartist in 0.16.0. (Fixes: #553)

v0.16.0 (2013-10-27)

The goals for 0.16 were to add support for queuing playlists of e.g. radio streams directly to Mopidy, without manually extracting the stream URLs from the playlist first, and to move the Spotify,, and MPRIS support out to independent Mopidy extensions, living outside the main Mopidy repo. In addition, we’ve seen some cleanup to the playback vs tracklist part of the core API, which will require some changes for users of the HTTP/JavaScript APIs, as well as the addition of audio muting to the core API. To speed up the development of new extensions, we’ve added a cookiecutter project to get the skeleton of a Mopidy extension up and running in a matter of minutes. Read below for all the details and for links to issues with even more details.

Since the release of 0.15, we’ve closed or merged 31 issues and pull requests through about 200 commits by five people, including three new contributors.


Parts of Mopidy have been moved to their own external extensions. If you want Mopidy to continue to work like it used to, you may have to install one or more of the following extensions as well:


  • Parts of the functionality in mopidy.core.PlaybackController have been moved to mopidy.core.TracklistController:

    Old location New location
    playback.get_consume() tracklist.get_consume()
    playback.set_consume(v) tracklist.set_consume(v)
    playback.consume tracklist.consume
    playback.get_random() tracklist.get_random()
    playback.set_random(v) tracklist.set_random(v)
    playback.random tracklist.random
    playback.get_repeat() tracklist.get_repeat()
    playback.set_repeat(v) tracklist.set_repeat(v)
    playback.repeat tracklist.repeat
    playback.get_single() tracklist.get_single()
    playback.set_single(v) tracklist.set_single(v)
    playback.single tracklist.single
    playback.get_tracklist_position() tracklist.index(tl_track)
    playback.tracklist_position tracklist.index(tl_track)
    playback.get_tl_track_at_eot() tracklist.eot_track(tl_track)
    playback.tl_track_at_eot tracklist.eot_track(tl_track)
    playback.get_tl_track_at_next() tracklist.next_track(tl_track)
    playback.tl_track_at_next tracklist.next_track(tl_track)
    playback.get_tl_track_at_previous() tracklist.previous_track(tl_track)
    playback.tl_track_at_previous tracklist.previous_track(tl_track)

    The tl_track argument to the last four new functions are used as the reference tl_track in the tracklist to find e.g. the next track. Usually, this will be current_tl_track.

  • Added mopidy.core.PlaybackController.mute for muting and unmuting audio. (Fixes: #186)

  • Added mopidy.core.CoreListener.mute_changed() event that is triggered when the mute state changes.

  • In “random” mode, after a full playthrough of the tracklist, playback continued from the last track played to the end of the playlist in non-random order. It now stops when all tracks have been played once, unless “repeat” mode is enabled. (Fixes: #453)

  • In “single” mode, after a track ended, playback continued with the next track in the tracklist. It now stops after playing a single track, unless “repeat” mode is enabled. (Fixes: #496)


  • Added support for parsing and playback of playlists in GStreamer. For end users this basically means that you can now add a radio playlist to Mopidy and we will automatically download it and play the stream inside it. Currently we support M3U, PLS, XSPF and ASX files. Also note that we can currently only play the first stream in the playlist.
  • We now handle the rare case where an audio track has max volume equal to min. This was causing divide by zero errors when scaling volumes to a zero to hundred scale. (Fixes: #525)
  • Added support for muting audio without setting the volume to 0. This works both for the software and hardware mixers. (Fixes: #186)

Local backend

  • Replaced our custom media library scanner with GStreamer’s builtin scanner. This should make scanning less error prone and faster as timeouts should be infrequent. (Fixes: #198)
  • Media files with less than 100ms duration are now excluded from the library.
  • Media files with the file extensions .jpeg, .jpg, .png, .txt, and .log are now skipped by the media library scanner. You can change the list of excluded file extensions by setting the local/excluded_file_extensions config value. (Fixes: #516)
  • Unknown URIs found in playlists are now made into track objects with the URI set instead of being ignored. This makes it possible to have playlists with e.g. HTTP radio streams and not just local:track:... URIs. This used to work, but was broken in Mopidy 0.15.0. (Fixes: #527)
  • Fixed crash when playing local:track:... URIs which contained non-ASCII chars after uridecode.
  • Removed media files are now also removed from the in-memory media library when the media library is reloaded from disk. (Fixes: #500)

MPD frontend

  • Made the formerly unused commands outputs, enableoutput, and disableoutput mute/unmute audio. (Related to: #186)
  • The MPD command list now works with "albumartist" as its second argument, e.g. list "album" "albumartist" "anartist". (Fixes: #468)
  • The MPD commands find and search now accepts albumartist and track (this is the track number, not the track name) as field types to limit the search result with.
  • The MPD command count is now implemented. It accepts the same type of arguments as find and search, but returns the number of tracks and their total playtime instead.

Extension support

  • A cookiecutter project for quickly creating new Mopidy extensions have been created. You can find it at cookiecutter-mopidy-ext. (Fixes: #522)

v0.15.0 (2013-09-19)

A release with a number of small and medium fixes, with no specific focus.


  • Mopidy no longer supports Python 2.6. Currently, the only Python version supported by Mopidy is Python 2.7. We’re continuously working towards running Mopidy on Python 3. (Fixes: #344)

Command line options

  • Converted from the optparse to the argparse library for handling command line options.
  • mopidy --show-config will now take into consideration any mopidy --option arguments appearing later on the command line. This helps you see the effective configuration for runs with the same mopidy --options arguments.


  • Added support for audio visualization. audio/visualizer can now be set to GStreamer visualizers.
  • Properly encode localized mixer names before logging.

Local backend

  • An album’s number of discs and a track’s disc number are now extracted when scanning your music collection.
  • The scanner now gives up scanning a file after a second, and continues with the next file. This fixes some hangs on non-media files, like logs. (Fixes: #476, #483)
  • Added support for pluggable library updaters. This allows extension writers to start providing their own custom libraries instead of being stuck with just our tag cache as the only option.
  • Converted local backend to use new local:playlist:path and local:track:path URI scheme. Also moves support of file:// to streaming backend.

Spotify backend

  • Prepend playlist folder names to the playlist name, so that the playlist hierarchy from your Spotify account is available in Mopidy. (Fixes: #62)
  • Fix proxy config values that was broken with the config system change in 0.14. (Fixes: #472)

MPD frontend

  • Replace newline, carriage return and forward slash in playlist names. (Fixes: #474, #480)
  • Accept listall and listallinfo commands without the URI parameter. The methods are still not implemented, but now the commands are accepted as valid.

HTTP frontend

  • Fix too broad truth test that caused mopidy.models.TlTrack objects with tlid set to 0 to be sent to the HTTP client without the tlid field. (Fixes: #501)
  • Upgrade Mopidy.js dependencies. This version has been released to npm as Mopidy.js v0.1.1.

Extension support

  • mopidy.config.Secret is now deserialized to unicode instead of bytes. This may require modifications to extensions.

v0.14.2 (2013-07-01)

This is a maintenance release to make Mopidy 0.14 work with pyspotify 1.11.


  • pyspotify >= 1.9, < 2 is now required for Spotify support. In other words, you’re free to upgrade to pyspotify 1.11, but it isn’t a requirement.

v0.14.1 (2013-04-28)

This release addresses an issue in v0.14.0 where the new mopidy-convert-config tool and the new mopidy --option command line option was broken because some string operations inadvertently converted some byte strings to unicode.

v0.14.0 (2013-04-28)

The 0.14 release has a clear focus on two things: the new configuration system and extension support. Mopidy’s documentation has also been greatly extended and improved.

Since the last release a month ago, we’ve closed or merged 53 issues and pull requests. A total of seven authors have contributed, including one new.


  • setuptools or distribute is now required. We’ve introduced this dependency to use setuptools’ entry points functionality to find installed Mopidy extensions.

New configuration system

  • Mopidy has a new configuration system based on ini-style files instead of a Python file. This makes configuration easier for users, and also makes it possible for Mopidy extensions to have their own config sections.

    As part of this change we have cleaned up the naming of our config values.

    To ease migration we’ve made a tool named mopidy-convert-config for automatically converting the old to a new mopidy.conf file. This tool takes care of all the renamed config values as well. See mopidy-convert-config for details on how to use it.

  • A long wanted feature: You can now enable or disable specific frontends or backends without having to redefine FRONTENDS or BACKENDS in your config. Those config values are gone completely.

Extension support

  • Mopidy now supports extensions. This means that any developer now easily can create a Mopidy extension to add new control interfaces or music backends. This helps spread the maintenance burden across more developers, and also makes it possible to extend Mopidy with new backends the core developers are unable to create and/or maintain because of geo restrictions, etc. If you’re interested in creating an extension for Mopidy, read up on Extension development.
  • All of Mopidy’s existing frontends and backends are now plugged into Mopidy as extensions, but they are still distributed together with Mopidy and are enabled by default.
  • The NAD mixer have been moved out of Mopidy core to its own project, Mopidy-NAD. See Extensions for more information.
  • Janez Troha has made the first two external extensions for Mopidy: a backend for playing music from Soundcloud, and a backend for playing music from a Beets music library. See Extensions for more information.

Command line options

  • The command option mopidy --list-settings is now named mopidy --show-config.
  • The command option mopidy --list-deps is now named mopidy --show-deps.
  • What configuration files to use can now be specified through the command option mopidy --config, multiple files can be specified using colon as a separator.
  • Configuration values can now be overridden through the command option mopidy --option. For example: mopidy --option spotify/enabled=false.
  • The GStreamer command line options, mopidy --gst-* and mopidy --help-gst are no longer supported. To set GStreamer debug flags, you can use environment variables such as GST_DEBUG. Refer to GStreamer’s documentation for details.

Spotify backend

  • Add support for starred playlists, both your own and those owned by other users. (Fixes: #326)
  • Fix crash when a new playlist is added by another Spotify client. (Fixes: #387, #425)

MPD frontend

  • Playlists with identical names are now handled properly by the MPD frontend by suffixing the duplicate names with e.g. [2]. This is needed because MPD identify playlists by name only, while Mopidy and Spotify supports multiple playlists with the same name, and identify them using an URI. (Fixes: #114)

MPRIS frontend

  • The frontend is now disabled if the DISPLAY environment variable is unset. This avoids some harmless error messages, that have been known to confuse new users debugging other problems.


  • Developers running Mopidy from a Git clone now need to run python develop to register the bundled extensions. If you don’t do this, Mopidy will not find any frontends or backends. Note that we highly recomend you do this in a virtualenv, not system wide. As a bonus, the command also gives you a mopidy executable in your search path.

v0.13.0 (2013-03-31)

The 0.13 release brings small improvements and bugfixes throughout Mopidy. There are no major new features, just incremental improvement of what we already have.


  • Pykka >= 1.1 is now required.


  • Removed the mopidy.settings.DEBUG_THREAD setting and the mopidy --debug-thread command line option. Sending SIGUSR1 to the Mopidy process will now always make it log tracebacks for all alive threads.

  • Log a warning if a track isn’t playable to make it more obvious that backend X needs backend Y to be present for playback to work.

  • mopidy.core.TracklistController.add() now accepts an uri which it will lookup in the library and then add to the tracklist. This is helpful for e.g. web clients that doesn’t want to transfer all track meta data back to the server just to add it to the tracklist when the server already got all the needed information easily available. (Fixes: #325)

  • Change the following methods to accept an uris keyword argument:

    Search queries will only be forwarded to backends handling the given URI roots, and the backends may use the URI roots to further limit what results are returned. For example, a search with uris=['file:'] will only be processed by the local backend. A search with uris=['file:///media/music'] will only be processed by the local backend, and, if such filtering is supported by the backend, will only return results with URIs within the given URI root.

Audio sub-system

  • Make audio error logging handle log messages with non-ASCII chars. (Fixes: #347)

Local backend

  • Make mopidy-scan work with Ogg Vorbis files. (Fixes: #275)
  • Fix playback of files with non-ASCII chars in their file path. (Fixes: #353)

Spotify backend

  • Let GStreamer handle time position tracking and seeks. (Fixes: #191)
  • For all playlists owned by other Spotify users, we now append the owner’s username to the playlist name. (Partly fixes: #114)

HTTP frontend

  • Mopidy.js now works both from browsers and from Node.js environments. This means that you now can make Mopidy clients in Node.js. Mopidy.js has been published to the npm registry for easy installation in Node.js projects.
  • Upgrade Mopidy.js’ build system Grunt from 0.3 to 0.4.
  • Upgrade Mopidy.js’ dependencies when.js from 1.6.1 to 2.0.0.
  • Expose mopidy.core.Core.get_uri_schemes() to HTTP clients. It is available through Mopidy.js as mopidy.getUriSchemes().

MPRIS frontend

  • Publish album art URIs if available.
  • Publish disc number of track if available.

v0.12.0 (2013-03-12)

The 0.12 release has been delayed for a while because of some issues related some ongoing GStreamer cleanup we didn’t invest enough time to finish. Finally, we’ve come to our senses and have now cherry-picked the good parts to bring you a new release, while postponing the GStreamer changes to 0.13. The release adds a new backend for playing audio streams, as well as various minor improvements throughout Mopidy.

  • Make Mopidy work on early Python 2.6 versions. (Fixes: #302)
    • optparse fails if the first argument to add_option is a unicode string on Python < 2.6.2rc1.
    • foo(**data) fails if the keys in data is unicode strings on Python < 2.6.5rc1.

Audio sub-system

  • Improve selection of mixer tracks for volume control. (Fixes: #307)

Local backend

  • Make mopidy-scan support symlinks.

Stream backend

We’ve added a new backend for playing audio streams, the stream backend. It is activated by default. The stream backend supports the intersection of what your GStreamer installation supports and what protocols are included in the mopidy.settings.STREAM_PROTOCOLS setting.

Current limitations:

  • No metadata about the current track in the stream is available.
  • Playlists are not parsed, so you can’t play e.g. a M3U or PLS file which contains stream URIs. You need to extract the stream URL from the playlist yourself. See #303 for progress on this.

Core API

  • mopidy.core.PlaylistsController.get_playlists() now accepts an argument include_tracks. This defaults to True, which has the same old behavior. If set to False, the tracks are stripped from the playlists before they are returned. This can be used to limit the amount of data returned if the response is to be passed out of the application, e.g. to a web client. (Fixes: #297)


v0.11.1 (2012-12-24)

Spotify search was broken in 0.11.0 for users of Python 2.6. This release fixes it. If you’re using Python 2.7, v0.11.0 and v0.11.1 should be equivalent.

v0.11.0 (2012-12-24)

In celebration of Mopidy’s three year anniversary December 23, we’re releasing Mopidy 0.11. This release brings several improvements, most notably better search which now includes matching artists and albums from Spotify in the search results.


  • The settings validator now complains if a setting which expects a tuple of values (e.g. mopidy.settings.BACKENDS, mopidy.settings.FRONTENDS) has a non-iterable value. This typically happens because the setting value contains a single value and one has forgotten to add a comma after the string, making the value a tuple. (Fixes: #278)

Spotify backend

  • Add mopidy.settings.SPOTIFY_TIMEOUT setting which allows you to control how long we should wait before giving up on Spotify searches, etc.

  • Add support for looking up albums, artists, and playlists by URI in addition to tracks. (Fixes: #67)

    As an example of how this can be used, you can try the the following MPD commands which now all adds one or more tracks to your tracklist:

    add "spotify:track:1mwt9hzaH7idmC5UCoOUkz"
    add "spotify:album:3gpHG5MGwnipnap32lFYvI"
    add "spotify:artist:5TgQ66WuWkoQ2xYxaSTnVP"
    add ""
  • Increase max number of tracks returned by searches from 100 to 200, which seems to be Spotify’s current max limit.

Local backend

  • Load track dates from tag cache.
  • Add support for searching by track date.

MPD frontend

  • Add mopidy.settings.MPD_SERVER_CONNECTION_TIMEOUT setting which controls how long an MPD client can stay inactive before the connection is closed by the server.
  • Add support for the findadd command.
  • Updated to match the MPD 0.17 protocol (Fixes: #228):
    • Add support for seekcur command.
    • Add support for config command.
    • Add support for loading a range of tracks from a playlist to the load command.
    • Add support for searchadd command.
    • Add support for searchaddpl command.
    • Add empty stubs for channel commands for client to client communication.
  • Add support for search by date.
  • Make seek and seekid not restart the current track before seeking in it.
  • Include fake tracks representing albums and artists in the search results. When these are added to the tracklist, they expand to either all tracks in the album or all tracks by the artist. This makes it easy to play full albums in proper order, which is a feature that have been frequently requested. (Fixes: #67, #148)

Internal changes


Core API:


  • Mixers with fewer than 100 volume levels could report another volume level than what you just set due to the conversion between Mopidy’s 0-100 range and the mixer’s range. Now Mopidy returns the recently set volume if the mixer reports a volume level that matches the recently set volume, otherwise the mixer’s volume level is rescaled to the 1-100 range and returned.

v0.10.0 (2012-12-12)

We’ve added an HTTP frontend for those wanting to build web clients for Mopidy!


  • pyspotify >= 1.9, < 1.11 is now required for Spotify support. In other words, you’re free to upgrade to pyspotify 1.10, but it isn’t a requirement.


  • Added installation instructions for Fedora.

Spotify backend

  • Save a lot of memory by reusing artist, album, and track models.
  • Make sure the playlist loading hack only runs once.

Local backend

  • Change log level from error to warning on messages emitted when the tag cache isn’t found and a couple of similar cases.
  • Make mopidy-scan ignore invalid dates, e.g. dates in years outside the range 1-9999.
  • Make mopidy-scan accept -q/--quiet and -v/--verbose options to control the amount of logging output when scanning.
  • The scanner can now handle files with other encodings than UTF-8. Rebuild your tag cache with mopidy-scan to include tracks that may have been ignored previously.

HTTP frontend

  • Added new optional HTTP frontend which exposes Mopidy’s core API through JSON-RPC 2.0 messages over a WebSocket. See HTTP JSON-RPC API for further details.
  • Added a JavaScript library, Mopidy.js, to make it easier to develop web based Mopidy clients using the new HTTP frontend.

Bug fixes

  • #256: Fix crash caused by non-ASCII characters in paths returned from glib. The bug can be worked around by overriding the settings that includes offending $XDG_ variables.

v0.9.0 (2012-11-21)

Support for using the local and Spotify backends simultaneously have for a very long time been our most requested feature. Finally, it’s here!


  • pyspotify >= 1.9, < 1.10 is now required for Spotify support.


  • New Installation guides, organized by OS and distribution so that you can follow one concise list of instructions instead of jumping around the docs to look for instructions for each dependency.
  • Moved Raspberry Pi howto from the wiki to the docs.
  • Updated MPD clients overview.
  • Added MPRIS clients and UPnP clients overview.

Multiple backends support

  • Both the local backend and the Spotify backend are now turned on by default. The local backend is listed first in the mopidy.settings.BACKENDS setting, and are thus given the highest priority in e.g. search results, meaning that we’re listing search hits from the local backend first. If you want to prioritize the backends in another way, simply set BACKENDS in your own settings file and reorder the backends.

    There are no other setting changes related to the local and Spotify backends. As always, see mopidy.settings for the full list of available settings.

Spotify backend

  • The Spotify backend now includes release year and artist on albums.
  • #233: The Spotify backend now returns the track if you search for the Spotify track URI.
  • Added support for connecting to the Spotify service through an HTTP or SOCKS proxy, which is supported by pyspotify >= 1.9.
  • Subscriptions to other Spotify user’s “starred” playlists are ignored, as they currently isn’t fully supported by pyspotify.

Local backend

  • #236: The mopidy-scan command failed to include tags from ALAC files (Apple lossless) because it didn’t support multiple tag messages from GStreamer per track it scanned.
  • Added support for search by filename to local backend.

MPD frontend

  • #218: The MPD commands listplaylist and listplaylistinfo now accepts unquoted playlist names if they don’t contain spaces.
  • #246: The MPD command list album artist "" and similar search, find, and list commands with empty filter values caused a LookupError, but should have been ignored by the MPD server.
  • The MPD frontend no longer lowercases search queries. This broke e.g. search by URI, where casing may be essential.
  • The MPD command plchanges always returned the entire playlist. It now returns an empty response when the client has seen the latest version.
  • The MPD commands search and find now allows the key file, which is used by ncmpcpp instead of filename.
  • The MPD commands search and find now allow search query values to be empty strings.
  • The MPD command listplaylists will no longer return playlists without a name. This could crash ncmpcpp.
  • The MPD command list will no longer return artist names, album names, or dates that are blank.
  • The MPD command decoders will now return an empty response instead of a “not implemented” error to make the ncmpcpp browse view work the first time it is opened.

MPRIS frontend

  • The MPRIS playlists interface is now supported by our MPRIS frontend. This means that you now can select playlists to queue and play from the Ubuntu Sound Menu.

Audio mixers

  • Made the NAD mixer responsive to interrupts during amplifier calibration. It will now quit immediately, while previously it completed the calibration first, and then quit, which could take more than 15 seconds.

Developer support

  • Added optional background thread for debugging deadlocks. When the feature is enabled via the mopidy --debug-thread option or mopidy.settings.DEBUG_THREAD setting a SIGUSR1 signal will dump the traceback for all running threads.
  • The settings validator will now allow any setting prefixed with CUSTOM_ to exist in the settings file.

Internal changes

Internally, Mopidy have seen a lot of changes to pave the way for multiple backends and the future HTTP frontend.

  • A new layer and actor, “core”, has been added to our stack, inbetween the frontends and the backends. The responsibility of the core layer and actor is to take requests from the frontends, pass them on to one or more backends, and combining the response from the backends into a single response to the requesting frontend.

    Frontends no longer know anything about the backends. They just use the mopidy.core — Core API.

  • The dependency graph between the core controllers and the backend providers have been straightened out, so that we don’t have any circular dependencies. The frontend, core, backend, and audio layers are now strictly separate. The frontend layer calls on the core layer, and the core layer calls on the backend layer. Both the core layer and the backends are allowed to call on the audio layer. Any data flow in the opposite direction is done by broadcasting of events to listeners, through e.g. mopidy.core.CoreListener and

    See Architecture for more details and illustrations of all the relations.

  • All dependencies are now explicitly passed to the constructors of the frontends, core, and the backends. This makes testing each layer with dummy/mocked lower layers easier than with the old variant, where dependencies where looked up in Pykka’s actor registry.

  • All properties in the core API now got getters, and setters if setting them is allowed. They are not explictly listed in the docs as they have the same behavior as the documented properties, but they are available and may be used. This is useful for the future HTTP frontend.




  • The base playback provider has been updated with sane default behavior instead of empty functions. By default, the playback provider now lets GStreamer keep track of the current track’s time position. The local backend simply uses the base playback provider without any changes. Any future backend that just feeds URIs to GStreamer to play can also use the base playback provider without any changes.
  • Removed mopidy.core.PlaybackController.track_at_previous. Use mopidy.core.PlaybackController.tl_track_at_previous instead.
  • Removed mopidy.core.PlaybackController.track_at_next. Use mopidy.core.PlaybackController.tl_track_at_next instead.
  • Removed mopidy.core.PlaybackController.track_at_eot. Use mopidy.core.PlaybackController.tl_track_at_eot instead.
  • Removed mopidy.core.PlaybackController.current_tlid. Use mopidy.core.PlaybackController.current_tl_track instead.


The playlists part of the core API has been revised to be more focused around the playlist URI, and some redundant functionality has been removed:


Towards Python 3 support:

  • Make the entire code base use unicode strings by default, and only fall back to bytestrings where it is required. Another step closer to Python 3.

v0.8.1 (2012-10-30)

A small maintenance release to fix a bug introduced in 0.8.0 and update Mopidy to work with Pykka 1.0.


  • Pykka >= 1.0 is now required.

Bug fixes

  • #213: Fix “streaming task paused, reason not-negotiated” errors observed by some users on some Spotify tracks due to a change introduced in 0.8.0. See the issue for a patch that applies to 0.8.0.
  • #216: Volume returned by the MPD command status contained a floating point .0 suffix. This bug was introduced with the large audio output and mixer changes in v0.8.0 and broke the MPDroid Android client. It now returns an integer again.

v0.8.0 (2012-09-20)

This release does not include any major new features. We’ve done a major cleanup of how audio outputs and audio mixers work, and on the way we’ve resolved a bunch of related issues.

Audio output and mixer changes

  • Removed multiple outputs support. Having this feature currently seems to be more trouble than what it is worth. The mopidy.settings.OUTPUTS setting is no longer supported, and has been replaced with mopidy.settings.OUTPUT which is a GStreamer bin description string in the same format as gst-launch expects. Default value is autoaudiosink. (Fixes: #81, #115, #121, #159)

  • Switch to pure GStreamer based mixing. This implies that users setup a GStreamer bin with a mixer in it in mopidy.settings.MIXER. The default value is autoaudiomixer, a custom mixer that attempts to find a mixer that will work on your system. If this picks the wrong mixer you can of course override it. Setting the mixer to None is also supported. MPD protocol support for volume has also been updated to return -1 when we have no mixer set. software can be used to force software mixing.

  • Removed the Denon hardware mixer, as it is not maintained.

  • Updated the NAD hardware mixer to work in the new GStreamer based mixing regime. Settings are now passed as GStreamer element properties. In practice that means that the following old-style config:

    MIXER = u'mopidy.mixers.nad.NadMixer'
    MIXER_EXT_PORT = u'/dev/ttyUSB0'

    Now is reduced to simply:

    MIXER = u'nadmixer port=/dev/ttyUSB0 source=aux speakers-a=on speakers-b=off'

    The port property defaults to /dev/ttyUSB0, and the rest of the properties may be left out if you don’t want the mixer to adjust the settings on your NAD amplifier when Mopidy is started.


  • When unknown settings are encountered, we now check if it’s similar to a known setting, and suggests to the user what we think the setting should have been.
  • Added mopidy --list-deps option that lists required and optional dependencies, their current versions, and some other information useful for debugging. (Fixes: #74)
  • Added tools/ to tee client requests to two backends and diff responses. Intended as a developer tool for checking for MPD protocol changes and various client support. Requires gevent, which currently is not a dependency of Mopidy.
  • Support tracks with only release year, and not a full release date, like e.g. Spotify tracks.
  • Default value of LOCAL_MUSIC_PATH has been updated to be $XDG_MUSIC_DIR, which on most systems this is set to $HOME. Users of local backend that relied on the old default ~/music need to update their settings. Note that the code responsible for finding this music now also ignores UNIX hidden files and folders.
  • File and path settings now support $XDG_CACHE_DIR, $XDG_DATA_DIR and $XDG_MUSIC_DIR substitution. Defaults for such settings have been updated to use this instead of hidden away defaults.
  • Playback is now done using playbin2 from GStreamer instead of rolling our own. This is the first step towards resolving #171.

Bug fixes

  • #72: Created a Spotify track proxy that will switch to using loaded data as soon as it becomes available.
  • #150: Fix bug which caused some clients to block Mopidy completely. The bug was caused by some clients sending close and then shutting down the connection right away. This trigged a situation in which the connection cleanup code would wait for an response that would never come inside the event loop, blocking everything else.
  • #162: Fixed bug when the MPD command playlistinfo is used with a track position. Track position and CPID was intermixed, so it would cause a crash if a CPID matching the track position didn’t exist.
  • Fixed crash on lookup of unknown path when using local backend.
  • #189: LOCAL_MUSIC_PATH and path handling in rest of settings has been updated so all of the code now uses the correct value.
  • Fixed incorrect track URIs generated by M3U playlist parsing code. Generated tracks are now relative to LOCAL_MUSIC_PATH.
  • #203: Re-add support for software mixing.

v0.7.3 (2012-08-11)

A small maintenance release to fix a crash affecting a few users, and a couple of small adjustments to the Spotify backend.


  • Fixed crash when logging IOError exceptions on systems using languages with non-ASCII characters, like French.
  • Move the default location of the Spotify cache from ~/.cache/mopidy to ~/.cache/mopidy/spotify. You can change this by setting mopidy.settings.SPOTIFY_CACHE_PATH.
  • Reduce time required to update the Spotify cache on startup. One one system/Spotify account, the time from clean cache to ready for use was reduced from 35s to 12s.

v0.7.2 (2012-05-07)

This is a maintenance release to make Mopidy 0.7 build on systems without all of Mopidy’s runtime dependencies, like Launchpad PPAs.


  • Change from version tuple at mopidy.VERSION to PEP 386 compliant version string at mopidy.__version__ to conform to PEP 396.

v0.7.1 (2012-04-22)

This is a maintenance release to make Mopidy 0.7 work with pyspotify >= 1.7.


  • Don’t override pyspotify’s notify_main_thread callback. The default implementation is sensible, while our override did nothing.

v0.7.0 (2012-02-25)

Not a big release with regard to features, but this release got some performance improvements over v0.6, especially for slower Atom systems. It also fixes a couple of other bugs, including one which made Mopidy crash when using GStreamer from the prereleases of Ubuntu 12.04.


  • The MPD command playlistinfo is now faster, thanks to John Bäckstrand.
  • Added the method mopidy.backends.base.CurrentPlaylistController.length(), mopidy.backends.base.CurrentPlaylistController.index(), and mopidy.backends.base.CurrentPlaylistController.slice() to reduce the need for copying the entire current playlist from one thread to another. Thanks to John Bäckstrand for pinpointing the issue.
  • Fix crash on creation of config and cache directories if intermediate directories does not exist. This was especially the case on OS X, where ~/.config doesn’t exist for most users.
  • Fix gst.LinkError which appeared when using newer versions of GStreamer, e.g. on Ubuntu 12.04 Alpha. (Fixes: #144)
  • Fix crash on mismatching quotation in list MPD queries. (Fixes: #137)
  • Volume is now reported to be the same as the volume was set to, also when internal rounding have been done due to mopidy.settings.MIXER_MAX_VOLUME has been set to cap the volume. This should make it possible to manage capped volume from clients that only increase volume with one step at a time, like ncmpcpp does.

v0.6.1 (2011-12-28)

This is a maintenance release to make Mopidy 0.6 work with pyspotify >= 1.5, which Mopidy’s develop branch have supported for a long time. This should also make the Debian packages work out of the box again.

Important changes

  • pyspotify 1.5 or greater is required.


  • Spotify playlist folder boundaries are now properly detected. In other words, if you use playlist folders, you will no longer get lots of log messages about bad playlists.

v0.6.0 (2011-10-09)

The development of Mopidy have been quite slow for the last couple of months, but we do have some goodies to release which have been idling in the develop branch since the warmer days of the summer. This release brings support for the MPD idle command, which makes it possible for a client wait for updates from the server instead of polling every second. Also, we’ve added support for the MPRIS standard, so that Mopidy can be controlled over D-Bus from e.g. the Ubuntu Sound Menu.

Please note that 0.6.0 requires some updated dependencies, as listed under Important changes below.

Important changes

  • Pykka 0.12.3 or greater is required.
  • pyspotify 1.4 or greater is required.
  • All config, data, and cache locations are now based on the XDG spec.
    • This means that your settings file will need to be moved from ~/.mopidy/ to ~/.config/mopidy/
    • Your Spotify cache will now be stored in ~/.cache/mopidy instead of ~/.mopidy/spotify_cache.
    • The local backend’s tag_cache should now be in ~/.local/share/mopidy/tag_cache, likewise your playlists will be in ~/.local/share/mopidy/playlists.
    • The local client now tries to lookup where your music is via XDG, it will fall-back to ~/music or use whatever setting you set manually.
  • The MPD command idle is now supported by Mopidy for the following subsystems: player, playlist, options, and mixer. (Fixes: #32)
  • A new frontend mopidy.frontends.mpris have been added. It exposes Mopidy through the MPRIS interface over D-Bus. In practice, this makes it possible to control Mopidy through the Ubuntu Sound Menu.


  • Replace mopidy.backends.base.Backend.uri_handlers with mopidy.backends.base.Backend.uri_schemes, which just takes the part up to the colon of an URI, and not any prefix.
  • Add Listener API, mopidy.listeners, to be implemented by actors wanting to receive events from the backend. This is a formalization of the ad hoc events the scrobbler has already been using for some time.
  • Replaced all of the MPD network code that was provided by asyncore with custom stack. This change was made to facilitate support for the idle command, and to reduce the number of event loops being used.
  • Fix metadata update in Shoutcast streaming. (Fixes: #122)
  • Unescape all incoming MPD requests. (Fixes: #113)
  • Increase the maximum number of results returned by Spotify searches from 32 to 100.
  • Send Spotify search queries to pyspotify as unicode objects, as required by pyspotify 1.4. (Fixes: #129)
  • Add setting mopidy.settings.MPD_SERVER_MAX_CONNECTIONS. (Fixes: #134)
  • Remove destroy() methods from backend controller and provider APIs, as it was not in use and actually not called by any code. Will reintroduce when needed.

v0.5.0 (2011-06-15)

Since last time we’ve added support for audio streaming to SHOUTcast servers and fixed the longstanding playlist loading issue in the Spotify backend. As always the release has a bunch of bug fixes and minor improvements.

Please note that 0.5.0 requires some updated dependencies, as listed under Important changes below.

Important changes

  • If you use the Spotify backend, you must upgrade to libspotify 0.0.8 and pyspotify 1.3. If you install from APT, libspotify and pyspotify will automatically be upgraded. If you are not installing from APT, follow the instructions at Installation.
  • If you have explicitly set the mopidy.settings.SPOTIFY_HIGH_BITRATE setting, you must update your settings file. The new setting is named mopidy.settings.SPOTIFY_BITRATE and accepts the integer values 96, 160, and 320.
  • Mopidy now supports running with 1 to N outputs at the same time. This feature was mainly added to facilitate SHOUTcast support, which Mopidy has also gained. In its current state outputs can not be toggled during runtime.


  • Local backend:
    • Fix local backend time query errors that where coming from stopped pipeline. (Fixes: #87)
  • Spotify backend:
    • Thanks to Antoine Pierlot-Garcin’s recent work on updating and improving pyspotify, stored playlists will again load when Mopidy starts. The workaround of searching and reconnecting to make the playlists appear are no longer necessary. (Fixes: #59)
    • Track’s that are no longer available in Spotify’s archives are now “autolinked” to corresponding tracks in other albums, just like the official Spotify clients do. (Fixes: #34)
  • MPD frontend:
    • Refactoring and cleanup. Most notably, all request handlers now get an instance of mopidy.frontends.mpd.dispatcher.MpdContext as the first argument. The new class contains reference to any object in Mopidy the MPD protocol implementation should need access to.
    • Close the client connection when the command close is received.
    • Do not allow access to the command kill.
    • commands and notcommands now have correct output if password authentication is turned on, but the connected user has not been authenticated yet.
  • Command line usage:
    • Support passing options to GStreamer. See mopidy --help-gst for a list of available options. (Fixes: #95)
    • Improve mopidy --list-settings output. (Fixes: #91)
    • Added mopidy --interactive for reading missing local settings from stdin. (Fixes: #96)
    • Improve shutdown procedure at CTRL+C. Add signal handler for SIGTERM, which initiates the same shutdown procedure as CTRL+C does.
  • Tag cache generator:
    • Made it possible to abort mopidy-scan with CTRL+C.
    • Fixed bug regarding handling of bad dates.
    • Use logging instead of print statements.
    • Found and worked around strange WMA metadata behaviour.
  • Backend API:
    • Calling on and mopidy.backends.base.playback.PlaybackController.previous() no longer implies that playback should be started. The playback state–whether playing, paused or stopped–will now be kept.
    • The method mopidy.backends.base.playback.PlaybackController.change_track() has been added. Like next(), and prev(), it changes the current track without changing the playback state.

v0.4.1 (2011-05-06)

This is a bug fix release fixing audio problems on older GStreamer and some minor bugs.

Bug fixes

  • Fix broken audio on at least GStreamer 0.10.30, which affects Ubuntu 10.10. The GStreamer appsrc bin wasn’t being linked due to lack of default caps. (Fixes: #85)
  • Fix crash in mopidy.mixers.nad that occures at startup when the io module is available. We used an eol keyword argument which is supported by serial.FileLike.readline(), but not by io.RawBaseIO.readline(). When the io module is available, it is used by PySerial instead of the FileLike implementation.
  • Fix UnicodeDecodeError in MPD frontend on non-english locale. Thanks to Antoine Pierlot-Garcin for the patch. (Fixes: #88)
  • Do not create Pykka proxies that are not going to be used in mopidy.core. The underlying actor may already intentionally be dead, and thus the program may crash on creating a proxy it doesn’t need. Combined with the Pykka 0.12.2 release this fixes a crash in the frontend which may occur when all dependencies are installed, but the frontend isn’t configured. (Fixes: #84)

v0.4.0 (2011-04-27)

Mopidy 0.4.0 is another release without major feature additions. In 0.4.0 we’ve fixed a bunch of issues and bugs, with the help of several new contributors who are credited in the changelog below. The major change of 0.4.0 is an internal refactoring which clears way for future features, and which also make Mopidy work on Python 2.7. In other words, Mopidy 0.4.0 works on Ubuntu 11.04 and Arch Linux.

Please note that 0.4.0 requires some updated dependencies, as listed under Important changes below. Also, the known bug in the Spotify playlist loading from Mopidy 0.3.0 is still present.


Known bug in Spotify playlist loading

There is a known bug in the loading of Spotify playlists. To avoid the bug, follow the simple workaround described at #59.

Important changes

  • Mopidy now depends on Pykka >=0.12. If you install from APT, Pykka will automatically be installed. If you are not installing from APT, you may install Pykka from PyPI:

    sudo pip install -U Pykka
  • If you use the Spotify backend, you should upgrade to libspotify 0.0.7 and the latest pyspotify from the Mopidy developers. If you install from APT, libspotify and pyspotify will automatically be upgraded. If you are not installing from APT, follow the instructions at Installation.


  • Mopidy now use Pykka actors for thread management and inter-thread communication. The immediate advantage of this is that Mopidy now works on Python 2.7, which is the default on e.g. Ubuntu 11.04. (Fixes: #66)
  • Spotify backend:
    • Fixed multiple segmentation faults due to bugs in Pyspotify. Thanks to Antoine Pierlot-Garcin and Jamie Kirkpatrick for patches to Pyspotify.
    • Better error messages on wrong login or network problems. Thanks to Antoine Pierlot-Garcin for patches to Mopidy and Pyspotify. (Fixes: #77)
    • Reduce log level for trivial log messages from warning to info. (Fixes: #71)
    • Pause playback on network connection errors. (Fixes: #65)
  • Local backend:
    • Fix crash in mopidy-scan if a track has no artist name. Thanks to Martins Grunskis for test and patch and “octe” for patch.
    • Fix crash in tag_cache parsing if a track has no total number of tracks in the album. Thanks to Martins Grunskis for the patch.
  • MPD frontend:
    • Add support for “date” queries to both the find and search commands. This makes media library browsing in ncmpcpp work, though very slow due to all the meta data requests to Spotify.
    • Add support for play "-1" when in playing or paused state, which fixes resume and addition of tracks to the current playlist while playing for the MPoD client.
    • Fix bug where status returned song: None, which caused MPDroid to crash. (Fixes: #69)
    • Gracefully fallback to IPv4 sockets on systems that supports IPv6, but has turned it off. (Fixes: #75)
  • GStreamer output:
    • Use uridecodebin for playing audio from both Spotify and the local backend. This contributes to support for multiple backends simultaneously.
  • Settings:
    • Fix crash on mopidy --list-settings on clean installation. Thanks to Martins Grunskis for the bug report and patch. (Fixes: #63)
  • Packaging:
    • Replace test data symlinks with real files to avoid symlink issues when installing with pip. (Fixes: #68)
  • Debugging:
    • Include platform, architecture, Linux distribution, and Python version in the debug log, to ease debugging of issues with attached debug logs.

v0.3.1 (2011-01-22)

A couple of fixes to the 0.3.0 release is needed to get a smooth installation.

Bug fixes

  • The Spotify application key was missing from the Python package.
  • Installation of the Python package as a normal user failed because it did not have permissions to install mopidy.desktop. The file is now only installed if the installation is executed as the root user.

v0.3.0 (2011-01-22)

Mopidy 0.3.0 brings a bunch of small changes all over the place, but no large changes. The main features are support for high bitrate audio from Spotify, and MPD password authentication.

Regarding the docs, we’ve improved the installation instructions and done a bit of testing of the available Android and iOS clients for MPD.

Please note that 0.3.0 requires some updated dependencies, as listed under Important changes below. Also, there is a known bug in the Spotify playlist loading, as described below. As the bug will take some time to fix and has a known workaround, we did not want to delay the release while waiting for a fix to this problem.


Known bug in Spotify playlist loading

There is a known bug in the loading of Spotify playlists. This bug affects both Mopidy 0.2.1 and 0.3.0, given that you use libspotify 0.0.6. To avoid the bug, either use Mopidy 0.2.1 with libspotify 0.0.4, or use either Mopidy version with libspotify 0.0.6 and follow the simple workaround described at #59.

Important changes

  • If you use the Spotify backend, you need to upgrade to libspotify 0.0.6 and the latest pyspotify from the Mopidy developers. Follow the instructions at Installation.
  • If you use the frontend, you need to upgrade to pylast 0.5.7. Run sudo pip install --upgrade pylast or install Mopidy from APT.


  • Spotify backend:
    • Support high bitrate (320k) audio. Set the new setting mopidy.settings.SPOTIFY_HIGH_BITRATE to True to switch to high bitrate audio.
    • Rename mopidy.backends.libspotify to mopidy.backends.spotify. If you have set mopidy.settings.BACKENDS explicitly, you may need to update the setting’s value.
    • Catch and log error caused by playlist folder boundaries being threated as normal playlists. More permanent fix requires support for checking playlist types in pyspotify (see #62).
    • Fix crash on failed lookup of track by URI. (Fixes: #60)
  • Local backend:
    • Add mopidy-scan command to generate tag_cache files without any help from the original MPD server. See Generating a local library for instructions on how to use it.
    • Fix support for UTF-8 encoding in tag caches.
  • MPD frontend:
    • Add support for password authentication. See mopidy.settings.MPD_SERVER_PASSWORD for details on how to use it. (Fixes: #41)
    • Support setvol 50 without quotes around the argument. Fixes volume control in Droid MPD.
    • Support seek 1 120 without quotes around the arguments. Fixes seek in Droid MPD.
  • frontend:
    • Update to use’s new Scrobbling 2.0 API, as the old Submissions Protocol 1.2.1 is deprecated. (Fixes: #33)
    • Fix crash when track object does not contain all the expected meta data.
    • Fix crash when response from cannot be decoded as UTF-8. (Fixes: #37)
    • Fix crash when response from contains invalid XML.
    • Fix crash when response from has an invalid HTTP status line.
  • Mixers:
    • Support use of unicode strings for settings specific to mopidy.mixers.nad.
  • Settings:
    • Automatically expand the “~” characted to the user’s home directory and make the path absolute for settings with names ending in _PATH or _FILE.
    • Rename the following settings. The settings validator will warn you if you need to change your local settings.
      • LOCAL_MUSIC_FOLDER to mopidy.settings.LOCAL_MUSIC_PATH
      • LOCAL_TAG_CACHE to mopidy.settings.LOCAL_TAG_CACHE_FILE
      • SPOTIFY_LIB_CACHE to mopidy.settings.SPOTIFY_CACHE_PATH
    • Fix bug which made settings set to None or 0 cause a mopidy.SettingsError to be raised.
  • Packaging and distribution:
    • Setup APT repository and create Debian packages of Mopidy. See Installation for instructions for how to install Mopidy, including all dependencies, from APT.
    • Install mopidy.desktop file that makes Mopidy available from e.g. Gnome application menus.
  • API:
    • Rename and generalize Playlist._with(**kwargs) to mopidy.models.ImmutableObject.copy().
    • Add musicbrainz_id field to mopidy.models.Artist, mopidy.models.Album, and mopidy.models.Track.
    • Prepare for multi-backend support (see #40) by introducing the provider concept. Split the backend API into a backend controller API (for frontend use) and a backend provider API (for backend implementation use), which includes the following changes:
      • Rename BaseBackend to mopidy.backends.base.Backend.
      • Rename BaseCurrentPlaylistController to mopidy.backends.base.CurrentPlaylistController.
      • Split BaseLibraryController to mopidy.backends.base.LibraryController and mopidy.backends.base.BaseLibraryProvider.
      • Split BasePlaybackController to mopidy.backends.base.PlaybackController and mopidy.backends.base.BasePlaybackProvider.
      • Split BaseStoredPlaylistsController to mopidy.backends.base.StoredPlaylistsController and mopidy.backends.base.BaseStoredPlaylistsProvider.
    • Move BaseMixer to mopidy.mixers.base.BaseMixer.
    • Add docs for the current non-stable output API, mopidy.outputs.base.BaseOutput.

v0.2.1 (2011-01-07)

This is a maintenance release without any new features.

Bug fixes

  • Fix crash in mopidy.frontends.lastfm which occurred at playback if either pylast was not installed or the scrobbling was not correctly configured. The scrobbling thread now shuts properly down at failure.

v0.2.0 (2010-10-24)

In Mopidy 0.2.0 we’ve added a scrobbling support, which means that Mopidy now can submit meta data about the tracks you play to your profile. See mopidy.frontends.lastfm for details on new dependencies and settings. If you use Mopidy’s support, please join the Mopidy group at

With the exception of the work on the scrobbler, there has been a couple of quiet months in the Mopidy camp. About the only thing going on, has been stabilization work and bug fixing. All bugs reported on GitHub, plus some, have been fixed in 0.2.0. Thus, we hope this will be a great release!

We’ve worked a bit on OS X support, but not all issues are completely solved yet. #25 is the one that is currently blocking OS X support. Any help solving it will be greatly appreciated!

Finally, please update your pyspotify installation when upgrading to Mopidy 0.2.0. The latest pyspotify got a fix for the segmentation fault that occurred when playing music and searching at the same time, thanks to Valentin David.

Important changes

  • Added a scrobbler. See mopidy.frontends.lastfm for details.


  • Logging and command line options:
    • Simplify the default log format, mopidy.settings.CONSOLE_LOG_FORMAT. From a user’s point of view: Less noise, more information.
    • Rename the mopidy --dump command line option to mopidy --save-debug-log.
    • Rename setting mopidy.settings.DUMP_LOG_FORMAT to mopidy.settings.DEBUG_LOG_FORMAT and use it for mopidy --verbose too.
    • Rename setting mopidy.settings.DUMP_LOG_FILENAME to mopidy.settings.DEBUG_LOG_FILENAME.
  • MPD frontend:
    • MPD command list now supports queries by artist, album name, and date, as used by e.g. the Ario client. (Fixes: #20)
    • MPD command add "" and addid "" now behaves as expected. (Fixes #16)
    • MPD command playid "-1" now correctly resumes playback if paused.
  • Random mode:
    • Fix wrong behavior on end of track and next after random mode has been used. (Fixes: #18)
    • Fix infinite recursion loop crash on playback of non-playable tracks when in random mode. (Fixes #17)
    • Fix assertion error that happened if one removed tracks from the current playlist, while in random mode. (Fixes #22)
  • Switched from using subprocesses to threads. (Fixes: #14)
  • mopidy.outputs.gstreamer: Set caps on the appsrc bin before use. This makes sound output work with GStreamer >= 0.10.29, which includes the versions used in Ubuntu 10.10 and on OS X if using Homebrew. (Fixes: #21, #24, contributes to #14)
  • Improved handling of uncaught exceptions in threads. The entire process should now exit immediately.

v0.1.0 (2010-08-23)

After three weeks of long nights and sprints we’re finally pleased enough with the state of Mopidy to remove the alpha label, and do a regular release.

Mopidy 0.1.0 got important improvements in search functionality, working track position seeking, no known stability issues, and greatly improved MPD client support. There are lots of changes since 0.1.0a3, and we urge you to at least read the important changes below.

This release does not support OS X. We’re sorry about that, and are working on fixing the OS X issues for a future release. You can track the progress at #14.

Important changes

  • License changed from GPLv2 to Apache License, version 2.0.
  • GStreamer is now a required dependency. See our GStreamer installation docs.
  • mopidy.backends.libspotify is now the default backend. mopidy.backends.despotify is no longer available. This means that you need to install the dependencies for libspotify.
  • If you used mopidy.backends.libspotify previously, pyspotify must be updated when updating to this release, to get working seek functionality.
  • mopidy.settings.SERVER_HOSTNAME and mopidy.settings.SERVER_PORT has been renamed to mopidy.settings.MPD_SERVER_HOSTNAME and mopidy.settings.MPD_SERVER_PORT to allow for multiple frontends in the future.


  • Exit early if not Python >= 2.6, < 3.
  • Validate settings at startup and print useful error messages if the settings has not been updated or anything is misspelled.
  • Add command line option mopidy --list-settings to print the currently active settings.
  • Include Sphinx scripts for building docs, pylintrc, tests and test data in the packages created by for i.e. PyPI.
  • MPD frontend:
    • Search improvements, including support for multi-word search.
    • Fixed play "-1" and playid "-1" behaviour when playlist is empty or when a current track is set.
    • Support plchanges "-1" to work better with MPDroid.
    • Support pause without arguments to work better with MPDroid.
    • Support plchanges, play, consume, random, repeat, and single without quotes to work better with BitMPC.
    • Fixed deletion of the currently playing track from the current playlist, which crashed several clients.
    • Implement seek and seekid.
    • Fix playlistfind output so the correct song is played when playing songs directly from search results in GMPC.
    • Fix load so that one can append a playlist to the current playlist, and make it return the correct error message if the playlist is not found.
    • Support for single track repeat added. (Fixes: #4)
    • Relocate from mopidy.mpd to mopidy.frontends.mpd.
    • Split gigantic protocol implementation into eleven modules.
    • Rename mopidy.frontends.mpd.{serializer => translator} to match naming in backends.
    • Remove setting mopidy.settings.SERVER and mopidy.settings.FRONTEND in favour of the new mopidy.settings.FRONTENDS.
    • Run MPD server in its own process.
  • Backends:
    • Rename mopidy.backends.gstreamer to mopidy.backends.local.
    • Remove mopidy.backends.despotify, as Despotify is little maintained and the Libspotify backend is working much better. (Fixes: #9, #10, #13)
    • A Spotify application key is now bundled with the source. mopidy.settings.SPOTIFY_LIB_APPKEY is thus removed.
    • If failing to play a track, playback will skip to the next track.
    • Both mopidy.backends.libspotify and mopidy.backends.local have been rewritten to use the new common GStreamer audio output module, mopidy.outputs.gstreamer.
  • Mixers:
    • Added new mopidy.mixers.gstreamer_software.GStreamerSoftwareMixer which now is the default mixer on all platforms.
    • New setting mopidy.settings.MIXER_MAX_VOLUME for capping the maximum output volume.
  • Backend API:
    • Relocate from mopidy.backends to mopidy.backends.base.
    • The id field of mopidy.models.Track has been removed, as it is no longer needed after the CPID refactoring.
    • mopidy.backends.base.BaseBackend() now accepts an output_queue which it can use to send messages (i.e. audio data) to the output process.
    • mopidy.backends.base.BaseLibraryController.find_exact() now accepts keyword arguments of the form find_exact(artist=['foo'], album=['bar']).
    • now accepts keyword arguments of the form search(artist=['foo', 'fighters'], album=['bar', 'grooves']).
    • mopidy.backends.base.BaseCurrentPlaylistController.append() replaces mopidy.backends.base.BaseCurrentPlaylistController.load(). Use mopidy.backends.base.BaseCurrentPlaylistController.clear() if you want to clear the current playlist.
    • The following fields in mopidy.backends.base.BasePlaybackController has been renamed to reflect their relation to methods called on the controller:
      • next_track to track_at_next
      • next_cp_track to cp_track_at_next
      • previous_track to track_at_previous
      • previous_cp_track to cp_track_at_previous
    • mopidy.backends.base.BasePlaybackController.track_at_eot and mopidy.backends.base.BasePlaybackController.cp_track_at_eot has been added to better handle the difference between the user pressing next and the current track ending.
    • Rename mopidy.backends.base.BasePlaybackController.new_playlist_loaded_callback() to mopidy.backends.base.BasePlaybackController.on_current_playlist_change().
    • Rename mopidy.backends.base.BasePlaybackController.end_of_track_callback() to mopidy.backends.base.BasePlaybackController.on_end_of_track().
    • Remove since it was barely used, untested, and we got no use case for non-exact search in stored playlists yet. Use mopidy.backends.base.BaseStoredPlaylistsController.get() instead.

v0.1.0a3 (2010-08-03)

In the last two months, Mopidy’s MPD frontend has gotten lots of stability fixes and error handling improvements, proper support for having the same track multiple times in a playlist, and support for IPv6. We have also fixed the choppy playback on the libspotify backend. For the road ahead of us, we got an updated release roadmap with our goals for the 0.1 to 0.3 releases.

Enjoy the best alpha relase of Mopidy ever :-)


  • MPD frontend:
    • Support IPv6.
    • addid responds properly on errors instead of crashing.
    • commands support, which makes RelaXXPlayer work with Mopidy. (Fixes: #6)
    • Does no longer crash on invalid data, i.e. non-UTF-8 data.
    • ACK error messages are now MPD-compliant, which should make clients handle errors from Mopidy better.
    • Requests to existing commands with wrong arguments are no longer reported as unknown commands.
    • command_list_end before command_list_start now returns unknown command error instead of crashing.
    • list accepts field argument without quotes and capitalized, to work with GMPC and ncmpc.
    • noidle command now returns OK instead of an error. Should make some clients work a bit better.
    • Having multiple identical tracks in a playlist is now working properly. (CPID refactoring)
  • Despotify backend:
    • Catch and log spytify.SpytifyError. (Fixes: #11)
  • Libspotify backend:
    • Fix choppy playback using the Libspotify backend by using blocking ALSA mode. (Fixes: #7)
  • Backend API:
    • A new data structure called cp_track is now used in the current playlist controller and the playback controller. A cp_track is a two-tuple of (CPID integer, mopidy.models.Track), identifying an instance of a track uniquely within the current playlist.
    • mopidy.backends.BaseCurrentPlaylistController.load() now accepts lists of mopidy.models.Track instead of mopidy.models.Playlist, as none of the other fields on the Playlist model was in use.
    • mopidy.backends.BaseCurrentPlaylistController.add() now returns the cp_track added to the current playlist.
    • mopidy.backends.BaseCurrentPlaylistController.remove() now takes criterias, just like mopidy.backends.BaseCurrentPlaylistController.get().
    • mopidy.backends.BaseCurrentPlaylistController.get() now returns a cp_track.
    • mopidy.backends.BaseCurrentPlaylistController.tracks is now read-only. Use the methods to change its contents.
    • mopidy.backends.BaseCurrentPlaylistController.cp_tracks is a read-only list of cp_track. Use the methods to change its contents.
    • mopidy.backends.BasePlaybackController.current_track is now just for convenience and read-only. To set the current track, assign a cp_track to mopidy.backends.BasePlaybackController.current_cp_track.
    • mopidy.backends.BasePlaybackController.current_cpid is the read-only CPID of the current track.
    • mopidy.backends.BasePlaybackController.next_cp_track is the next cp_track in the playlist.
    • mopidy.backends.BasePlaybackController.previous_cp_track is the previous cp_track in the playlist.
    • now takes a cp_track.

v0.1.0a2 (2010-06-02)

It has been a rather slow month for Mopidy, but we would like to keep up with the established pace of at least a release per month.


  • Improvements to MPD protocol handling, making Mopidy work much better with a group of clients, including ncmpc, MPoD, and Theremin.
  • New command line flag mopidy --dump for dumping debug log to dump.log in the current directory.
  • New setting mopidy.settings.MIXER_ALSA_CONTROL for forcing what ALSA control mopidy.mixers.alsa.AlsaMixer should use.

v0.1.0a1 (2010-05-04)

Since the previous release Mopidy has seen about 300 commits, more than 200 new tests, a libspotify release, and major feature additions to Spotify. The new releases from Spotify have lead to updates to our dependencies, and also to new bugs in Mopidy. Thus, this is primarily a bugfix release, even though the not yet finished work on a GStreamer backend have been merged.

All users are recommended to upgrade to 0.1.0a1, and should at the same time ensure that they have the latest versions of our dependencies: Despotify r508 if you are using DespotifyBackend, and pyspotify 1.1 with libspotify 0.0.4 if you are using LibspotifyBackend.

As always, report problems at our IRC channel or our issue tracker. Thanks!


  • Backend API changes:
    • Removed backend.playback.volume wrapper. Use backend.mixer.volume directly.
    • Renamed backend.playback.playlist_position to current_playlist_position to match naming of current_track.
    • Replaced get_by_id() with a more flexible get(**criteria).
  • Merged the gstreamer branch from Thomas Adamcik:
    • More than 200 new tests, and thus several bug fixes to existing code.
    • Several new generic features, like shuffle, consume, and playlist repeat. (Fixes: #3)
    • [Work in Progress] A new backend for playing music from a local music archive using the GStreamer library.
  • Made mopidy.mixers.alsa.AlsaMixer work on machines without a mixer named “Master”.
  • Make mopidy.backends.DespotifyBackend ignore local files in playlists (feature added in Spotify 0.4.3). Reported by Richard Haugen Olsen.
  • And much more.

v0.1.0a0 (2010-03-27)

Release early. Release often. Listen to your customers.” wrote Eric S. Raymond in The Cathedral and the Bazaar.

Three months of development should be more than enough. We have more to do, but Mopidy is working and usable. 0.1.0a0 is an alpha release, which basicly means we will still change APIs, add features, etc. before the final 0.1.0 release. But the software is usable as is, so we release it. Please give it a try and give us feedback, either at our IRC channel or through the issue tracker. Thanks!


  • Initial version. No changelog available.