Okay, I got the module compiled and it and ALSA installed. I noticed the timing bug, I doubt its a frequency issue as the ALSA guides to downsample (i.e. if it were doing 48kHz instead of 44.1kHz) didn't help. You mentioned on some players it would sound okay? I tried everything from aplay to xmms and always seemed to play too fast. What CPU are you running this on, by the way? Aplay does give underruns if I'm heavily multitasking, though sound output seems the same.
