I have an Onkyo HT-R530 receiver. I have had it set up for 6 months. Suddenly today I think I sat on the remote or something, it stopped playing the audio for my cable. DVD and all the other components sound great. I have tried switching the input over and over, but no sound. I have optics sound for the HD, but if you set it to auto it usually knows which to use. I have both A and B speakers on, but have tried every mathmatical combination to get iti to work, no deal though. It isn't muted and all of the cords are inserted correctly. I am hosting movie night tonight and am pissed. What is going on?