Foobar2000, if you were wondering, is a very light-weight music player. It’s incredibly flexible thanks to its modular design and fully-featured developer kit. There are mods and plug-ins for Foobar that make it one of the most useful music players: if you’re the kind of music buff that likes downloading ‘quadrophonic gold remastered’ albums in AC3 format from Torrent sites, then Foobar is the music player for you. If you have a large MP3 (or FLAC, AAC, MP4…) music collection and simply want to listen to it, Foobar is also the one for you.

http://www.downloadsquad.com/2009/11/20/foobar2000-v1-0-beta-holy-crap-its-finally-here/