Working on a solution to this now, but I'm told it's due to excessive serial voltage coming from the PC to the Korg, then bleeding into the audio stages back to the PC. I've found that padding the volume level back to the PC (if you have a mixer running between the KORG and your soundcard's line in) will help a ton in minimizing this (note: the physical volume knob setting on the KORG has no effect on reducing noise and should be maxed out to maximize signal to noise ratio, as well as setting the MIDI channel volume setting to 127). Also, using the headphone jack instead of the 1/4" line outs dramatically lowered the serial noise! I will follow-up if I fix this. ---------------------------------------------------------------- This message was sent through the Korgy Park mailing list. Mailing list info page: //www.freelists.org/list/korgypark.