multimedia keyboard

The tool xbindkeys (it has a GUI configurator too, but its a independently distributed tool)

http://hocwp.free.fr/xbindkeys/xbindkeys.html

U can configure any of the keys on the keyboard to change the PCM volume, mute xmms, Forward a song by 3 minutes,
basically anything that can be done from a commandline by mapping a key(s) mapped to the command in xbindkeys.

Moral of the story: therz no point spending money on a MultiMedia Keyboard if u use Linux..