WingHeart-
From my experience, the memory will be defaulted to 4xFSB, however, you can adjust the memory divider to increase or decrease the memory bus frequency...check out gjt's memory calculator HERE and see what frequencies you can set your memory to. Dont know about the audio stuff, though.

All Else-
Has anyone had issues with setting memory timings that POST, detect (in BIOS and CPU-Z, etc.), and run correctly, but after you turn off the computer for the night it wont POST the next day?

sean