Songbird is a Web player built from Firefox's browser engine. It is open source and will run on Windows, Mac OS X and Linux. It supports user contributed, cross-platform extensions. Play any MP3 on the Web without leaving the page. It can view Web pages as dynamic playlists that it can play, save, or automatically download every day. It plays your music too. It has all the features you expect in a desktop media player.
Cross Platform
Windows, Mac, Linux
45+ languages
64-bit support