I'm looking for recommendations on a USB data capture pod or (ideally) a cheap audio input device that is known to have working driver support for 64-bit PowerPC Linux. At minimum I need to capture one 10- bit ADC channel at 22.1kHz; anything friskier would be great, and my ideal would be 48kHz 16-bit stereo.
I need to get this working on the PlayStation 3, and I really can't find anything that's documented specifically enough to PPC Linux that I can feel confident about buying it.
This is a one-off project; I'd even be happy to buy a used one from some Usenet denizen, as long as it was guaranteed I'd be able to get it working.