Quod Libet (software)
Quod Libet is a cross-platform free and open-source audio player, tag editor and library organizer. The main design philosophy is that the user knows how they want to organize their music best; the software is therefore built to be fully customizable and extensible using regular expressions. Quod Libet is based on GTK and written in Python, and uses the Mutagen tagging library. Ex Falso is the stand-alone tag-editing app based on the same code and libraries.
Quod Libet is very scalable, able to handle libraries with tens of thousands of songs with ease. It provides a full feature set including support for Unicode, regular expression searching, key bindings to multimedia keys, fast but powerful tag editing, and a variety of [|plugins].
Quod Libet is available on most Linux distributions, FreeBSD, macOS and Windows, requiring only PyGObject, Python, and an Open Sound System or ALSA compatible audio device. The XFCE desktop ISO image provided by the Debian project installs Quod Libet as the default audio player.
Features
Audio playback
- Can deal with various audio back-ends via the plug-in architecture of GStreamer
- Supports ReplayGain with smart selection based on either single track or full album, based on current view and play order
- 'Real' shuffle mode- entire playlist played before repeating
- Ratings weighted random playback setting
- Play queue
Tag editing
- Complete Unicode support
- Changes to multiple files at once, even if files are in different formats
- Ability to tag files based on filenames with fully configurable formats
- Customizable renaming of files based on their tags and a user-supplied format
- Human readable tag references, e.g.
</code> rather than <code>%a</code> or <code>%t</code>, with support for "if not-null <i>x</i> else <i>y</i>" logic </li><li> <a href="/wiki/Fast_track">Fast track</a> renumbering<h3>Audio library</h3></li><li> Audio Feeds / <a href="/wiki/Podcast">Podcast</a> support</li><li> Can save play counts</li><li> Can download and save lyrics</li><li> Fast refreshing of entire library based on changed files</li><li> <a href="/wiki/Internet_Radio">Internet Radio</a> / <a href="/wiki/SHOUTcast">SHOUTcast</a> support</li><li> Scalable song rating, from 1 to 10 stars. keyboard shortcut: Ctrl- Rates the selected song with 0-4 stars for default <a href="/wiki/Rating_scale">rating scale</a><h3>User interface</h3></li><li> Configurable interface to suit <a href="/wiki/User_preferences">user preferences</a>; <a href="/wiki/Pango">Pango</a> markup is used so that user can display tags in any way desired in the player</li><li> Drag-n-drop support throughout interface.</li><li> Tray icon with full player control</li><li> Automatically recognize and display tags from many uncommon tags</li><li> Multiple ways to browse library:</li><li>* Progressive search - library is filtered as searches are typed</li><li>* Queries support <a href="/wiki/Boolean_logic">boolean logic</a>, numerical / date-based expressions, and regular expressions, and <i>synthetic</i> tags, that are derived internally.</li><li>* Playlists with integration throughout the player</li><li>* Paned browser, using any fully customizable tags, allowing the user to through their library as they prefer</li><li>* View by album list with <a href="/wiki/Cover_art">cover art</a></li><li>* View by file-system directory, which includes songs not in your library<h3>File formats</h3></li></ul>Include <a href="/wiki/MP3">MP3</a>, <a href="/wiki/Ogg_Vorbis">Ogg Vorbis</a>, <a href="/wiki/Opus_%28audio_format%29">Opus</a>, <a href="/wiki/FLAC">FLAC</a>, <a href="/wiki/Apple_Lossless">ALAC</a>, <a href="/wiki/Musepack">Musepack</a>, <a href="/wiki/Module_file">MOD/XM/IT</a>, <a href="/wiki/Windows_Media_Audio">WMA</a>, <a href="/wiki/Wavpack">Wavpack</a>, <a href="/wiki/MPEG-4_AAC">MPEG-4 AAC</a><h2>Unix-like control and query mechanisms</h2><ul><li> Status information available from the <a href="/wiki/Command_line">command line</a></li><li> Control of player using <a href="/wiki/Named_pipe">named pipe</a> is possible</li><li> Text-based files available with current song information.<h2>Plugins</h2></li></ul>Quod Libet is currently bundled with over 60 Python-based plugins, including:<br><ul><li> Automatic tagging via <a href="/wiki/MusicBrainz">MusicBrainz</a> and <a href="/wiki/CDDB">CDDB</a></li><li> <a href="/wiki/Download">Download</a> and preview <a href="/wiki/Album_art">album art</a> from a variety of online sources</li><li> <a href="/wiki/On-screen_display">On-screen display</a> pop-ups</li><li> Last.fm/AudioScrobbler submission</li><li> Tag <a href="/wiki/Character_encoding">character encoding</a> conversion</li><li> Intelligent title-casing of tags</li><li> Finding duplicate or near-duplicate songs across the entire library.</li><li> Scan and save <a href="/wiki/Replay_Gain">Replay Gain</a> values across multiple albums at once </li><li> D-Bus-based Multimedia <a href="/wiki/Shortcut_Keys">Shortcut Keys</a></li><li> Integrate with Logitech <a href="/wiki/Squeezebox_%28network_music_player%29">Squeezebox</a>.</li><li> Export playlists to common formats</li></ul> </section> <aside> <h2><span>Popular articles</span></h2><ul class="poplist"><li><a href="/wiki/Javier_Milei">Javier Milei</a> - Argentine libertarian economist, author, radio conductor and public speaker sympathetic to the Austrian School of economic thought. 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