Can anyone out there explain this one. I just upgraded to HS 2002 two days ago. I recorded three separate clips of classical piano in a track with no problem. The following day, I was attemping to add a fourth and experienced what seemed to be two separate but identical signals playing back through the headphones, one slightly out of sync with the other, not unlike a heavy delay effect. All effects were off. I was sending audio from my keyboard to my Roland USB interface as I've done for two years without problems. I went ahead and recorded the piece anyway. It recorded fine. Only the usb sound card of the Roland interface was activated and Cakewalk only allows playback from one sound card at a time. What could cause this strange Cakewalk phenomena?