Plays MP3, MOD (and friends), WAV, AU, and CD files..Streaming over HTTP/SHOUTcast for mp3, au, and wav files. Neat, easy to use plugin architecture. Eats CPU cycles with funky eye candy =) Converts winamp (limited support for the new 2.0 format) skins to eMusic themes. Limited support for Gqmpeg themes, no playlist editor in converted themes. Other stuff.. play with it to find out.