I'm at a dead end trying to connect my PC to play music through my receiver. I've tried connecting to the audio input of a video channel on the receiver, and directly to the 5.1 channel input, but I get a bad hum through the speakers both ways. The Audigy card has 3 output jack connections: Analog/Digital Out, Line Out & Rear OUT. Which one(s) should I use, and where should I connect them at the receiver? What kind of cables do I need? Any advice is greatly appreciated.