using ubuntu 10.04, logiteh K360 wireless unifying keyboard...

when using Rythembox, the multimedia keys on this keyboard work (prev, play/pause & next).

I had to configure the unifying dongle on windows first, so I've installed no software to support this thing.

How are those keys being mapped? How do I add that mapping support to other players like Quod Libet? What is the proper name for this KEY MAPPING so I can google for documentation?