Songbird is a free and open source software audio player and web browser, with a stated mission "to incubate Songbird, the first Web player, to catalyze and champion a diverse, open Media Web".
Songbird utilizes the cross-platform frameworks Mozilla XULRunner and GStreamer media framework, and largely capable of running on Microsoft Windows, Apple Mac OS X, Solaris and Linux. It is not supported on Linux or Solaris at this time, but users have forked Songbird and made a linux compatible version under the name Nightingale. Features
-Multi-platform compatibility with Windows XP, Vista and Mac OS X v10.5 (x86, x86-64).
-Ability to play multiple audio formats, such as MP3, AAC, Ogg Vorbis, FLAC, Apple Lossless and WMA
-Ability to play Apple FairPlay-encoded audio on Windows and Mac platforms via hooks into QuickTime (authorization takes place in iTunes)
-Ability to play Windows Media DRM audio on Windows platforms
-A skinnable interface, via feathers
-Media files stored on pages viewed in the browser show up as playable files in Songbird
-MP3 file download
-Ability to subscribe to MP3 blogs as playlists
-Ability to build custom mixes
-Ability to scan the user's computer for all audio files and add them to a local library
-A configurable and collapsible graphical user interface similar to iTunes, and mini-player mode
-Keyboard shortcuts and media keyboard support
-Last.fm integration via a plugin, complete with love/hate buttons
-Insound.com and HypeMachine integration
-Microsoft MTP compatible device support
-Ability to edit and save metadata tags
-Gapless Playback & ReplayGain
-Media Importing / Exportings (from and to iTunes)
-Automatic Library Files OrganizationAdd-onsExtensions
Users can add features and change functionality in Songbird by installing extensions. Extensions are similar to the Extensions for the Firefox browser and can be easily ported. Community coded extensions are available on Songbird's addons support page. Known community designed extensions are: Qloud Tagging & Search, eMusic Integration, iTunes Importer, Artist Tracker, Library File Organizer, Audioscrobbler Notifier, Wikipedia Artist Display, SHOUTcast Radio Directory, UnPlug, Adblock Plus, Taglib metadata handler, and ChatZilla.Skins
Skins are referred to as "feathers" in Songbird, and give users and artists the ability to change the look of Songbird via an extension which generates a default skin. Using CSS (and optionally XUL), and an image manipulation program such as Photoshop or GIMP, users are then able to make Songbird look however they want.
Download it from HERE