I don't know if this applies so much to what you're doing, but I have a PC hooked to my TV as a PVR, it has a DVD, I have a Pioneer surround system, a five disc cd changer, digital cable box, and TV. Right now I control the PC with an IR keyboard with a built in trackball, and everything else from a universal remote. I'm working on programming the PC to accept commands from the universal remote, or failing that, control everything from an old Handspring Visor. The Pc is ntworked in with all the other PCs in the house, so I can get mp3s from everywhere. Oh, tuner built in to the surround system. It's kind of a brute force approach, but it got put together a piece at a time.