I am trying to record XM Music from my DirecTV HR-20 receiver running through my A/V receiver to my PC. I have the satellite receiver connected to the amp via optical cable and an RCA connection from the line out on the amp to the line in on the PC. Here's the problem: I'm only getting the left stereo channel to the PC's sound card. I can run a cable from the amp's headphone jack to the PC and get both channels but I would rather have the line out connection to the PC for better quality. Any ideas?