Noatun (no, you can't pronounce it correctly, so don't try) is, as of this writing, the 'Pet' media player for the KDE Project. At the moment., it is one of the more visually stunning players available for KDE2, and *nix in general. Among other things is support for k-jofol and Sonique-style arbitrary shaped skins, allowing Noatun to become any shape you like.
The built in media support is average -- Microsoft WAV, MP3, OggVorbis, MPEG-1, and DivX ;-) -- but has a robust pluggin design that allows easy building of extended capabilities modules.
Noatun - Negative Opus And Twisted Ultra Nuances