A couple weeks ago, I bought a home theater system, and have a Yamaha HTR-5935 receiver. It's a 5.1 system. I finally got around to buying some optical cables, one for my computer (Powermac G5) and one for my PS2. To try out the surround, I tried playing a DVD encoded in 5.1 on my computer. I set the audio to Dolby 5.1 in the setup menu, however, the indicator on my receiver that says what signal its getting shows it's only getting a stereo signal for the front left and right speakers (it should have all 5 speakers indicated). Thinking it was the computer, I tried the DVD in my PS2 and got the same result. I get sound, just not surround. I tried every audio option and tried damn near every option on the receiver. I've also tried 2 different DVDs (Austin Powers Goldmember and Animal House were the 2 I randomly grabbed) Anyone know how to get 5.1 surround working? Thanks