I just hooked together my Kenwood VR-507 and my Panasonic RV-31 DVD player. I am using an optical audio cable from my DVD player to my receiver. I can get video when I play my DVDs, but I don't get any sound. I've run the test tone to see if I get sound. The sound is sort of like the crowd from a sports game. Is that what I'm supposed to hear? I don't have my surrounds hooked up, so I turned those off. I have my fronts and my center connected. I get the test sound from all three speakers. I just tried the tuner and all I get is normal static. I did this to see if the test tone was just static, but it's definately a different sound. Do I need to set my DVD player different, or what?