Songbird is an open-source rival to iTunes. It's avaliable for Windows, Linux and Mac OS X.
Songbird is built with code from VLC media player and FireFox.
Songbird is made with code from VLC media player (version 0.8.4a and updates) so should be compatible with most or all of VideoLAN's features.
Do you know more about the compatibility of Songbird? Please add it here