Your favourite media library/player

[GD]

Songbird.

1. Plays almost everything.
2. Can tag flac files.
3. Last Fm support/ Artist info section is exceptionally good.
4. Customizable.
5. Open Source.
6. Also available for Mac, Linux and OpenSolaris.

[Indifferent Clox]

foobar, winamp (i love winamps visulizations, when i'm altered)