Nightingale is a free, open-source music management program that is based on the Songbird media player source code. It has a slick and user-friendly interface that can be customized with 'feathers', Nightingale's answer to skins.

Thanks to the built-in browser, it is quick and easy to get extra content for the app such as album artwork, add-ons and skins. You can also get extra funcionality via plugins like Last.fm and Icecast support.

Features include:

• Plugins compatible with Songbird (with any modification to the addon)
• Multi-platform compatibility with Windows XP, Vista, 7, Linux 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
• Media files stored on pages viewed in the browser show up as playable files in Nightingale
• 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
• Microsoft MTP compatible device support
• Ability to edit and save metadata tags
• Gapless playback and ReplayGain
• Watch folders
• Media import and export (from and to iTunes)