Songbird, a “Web player built from Firefox’s browser engine” (XUL) has been released the 8th of Feb.
Check out the official site songbirdnest.com to find out more about it: it’s not just a black iTunes clone!
Songbird plays the Web. Play any MP3 on the Web without leaving the page. Songbird can view Web pages as dynamic playlists that it can play, save, or automatically download every day.
Songbird plays your music too. Songbird has all the features you expect in a desktop media player. And Songbird constantly improves. Like Firefox, Songbird’s features may be improved with user installed and contributed cross-platform extensions.
The songbird guys are definitely onto something good… well… at least something different! Anyway think about this: it’s open source and there is the possibility to further expand it and enhance it.