@Krashan That is too bad to hear. I wonder which is worse: AHI doing the resampling or the card itself? People get around the problems on Windows by just doing the resampling in the media player itself.
Mapping to the rear output is the default setting in the kX Project drivers on Windows. While the front has creative's AC'97 codec, the rear has a Philips UDA1334.
@Jim No, the powermac G4s don't use an AC'97 chip. Are you using grounded equipment with the internal mac audio? If so you'll notice a horrid hum even when there is no no audio being produced (touched on this in one of my previous posts). Is it the Audigy SE/Value you have? From the info Andreas linked to in the other thread I'm thinking: Audigy, Audigy ES, Audigy 2. Maybe the Audigy 2ZS as well?
