I have correctly connected my cable box and BD player to the Denon Receiver, and I have yet to hear any audio out of my speakers. I am able to get audio out of the TV when I set the receiver to output audio through the TV. When I connect the BD player to the cable input and the cable box to the BD input, the BD still functions, and the Cable Box audio still doesn't function. I am able to get video perfectly fine. I contacted the nice folks at Denon support. They told me to contact Comcast for a cable box that supports bitstream audio, though the box I have supports PCM and so does the receiver. I am currently contacting Comcast and will update this thread. Thanks, Josh PS: Could this be caused by a grounding issue? I have noticed that it may be a grounding issue, and will test it soon.