Wireless audio

Hello,
I have two PC and one set of PC speakers, I would like to share the audio from both PC on those speakers without using cables and Im looking for a solution.

So far, I've found the Apple Airport and a Linksys solution WMB54G

THe problem with the Airport is that in allows only input from iTunes (no system sound, games sounds ...) and I hate iTunes.   The linksys solution seems to be fine but the BIG bad point is a configuration and usage which seems to be extremely tricky as I read in some reviews.

I would like to ask you if you know other solution for wireless audio.

Thanks in advance,
Tex