Im not a pro by any means... I guess I should tell you my setup first. Sonar 3 Producer Edition, PreSonus Firepod, Behringer Composer Pro-XL, Aphex 204, many plugins. I had a problem with this crackling noise and i narrowed it down to the guitar tracks. It seemed to be a problem with having too many guitar tracks at once. I had 8 tracks (4 seperate parts, each part with 2 mics on a cab.), the volume was not loud enough to clip and even if I turned the volume WAY down on the tracks, it still crackled. I asked a guy i know about it and he said I needed to pan the tracks out of the way of each other. That seemed to work, but I would like to know what this is called and learn a little more about it. If its too complicated to go into here, I would be grateful if someone could post a link to a helpful site. thanks a lot! PS: Ive noticed this problem in some professional recordings too, but mainly with the toms. IE:Simple Plan, The Ataris... big name stuff.