I am running Fedora Core 5 on the Playstation 3 (PPC build, kernel 2.6.16). 

I'd like to do some audio processing on it using 4 microphone channels.  The channels have to be synchronous and all I have is USB 2.0 inputs, so I've been looking at USB audio interfaces.

Does anyone have a recommendation that will work with no/few hassles on FC5 PPC 2.6.16? 

Here are 3 I've looked at

* M-Audio Quattro (used on EBay)

* M-Audio Torq/Conectiv

* Roland/Edirol US-101

Thanks,
Jim Steed