I have an HP Media Center 864n pc with a TV Tuner card that has the cable hookup, 2 RCA ports (L audio, R audio), and an 7 prong S-video port. I currently have my PC hooked up to my TV through the 4 prong S-Video port on my NVIDIA GeForce FX 5500 graphics card, and the video works fine. The problem is that I've hooked up the L and R RCA ports to the TV, but no sound will come out. So I was wondering if anyone might now how to get my sound to run through the Television speakers.