Hopefully someone out there can help me trouble shoot this problem: I have my entire CD collection now on my hardrive. I wanted to hook it up to my receiver so I could cue up music on the machine and let it play through my main system. Got a miniplug extension and a stereo mini plug to RCA adapter. Ran that from the output on my soundcard (same output that usually runs the PC speakers and subwoofer) and hooked the other end into an unused line input on my Pioneer receiver.... Problem is it puts out a TERRIBLE hum through the receiver. The hum is there no matter what I switch to on the receiver.... Line, DVD, VCR... the hum is there. If I unplug the cord at the computer the hum stops... but if I touch the plug to a metal part on the back of the computer the hum picks up again.... like the computer is not grounded properly or something. Both the computer and the receiver (and all components) are plugged in to line filter/surge protectors and all appear to be properly grounded (according to my little outlet tester). Any ideas on how to get rid of the hum??