I have a pair of M-Audio BX5a's, Mackie Onyx Satilite interface, iMac 1.9 isight and a seagate 10,000 rpm drive. Running guitar through a Korg pandoras box and some times out of the 1/4 headphone jack of my amp into channel one of the interface. The monitors are hooked up to the satilites control room out. First off the speakers peak out easily with crackles and pops and this funky digital noise that sustains. Second I get to much background noise. The background noise is not present in the playblack, but I hate it none the less. Is there any kind of product to put inbetween the interface and the speakers our a common fix for this problem