I feel like a complete idiot! I just checked the info button on my new Denon x3500h and noticed everything was PCM Stereo in no matter what channel I used on my ROKU. Both audio and video are transmitted through the HDMI. MY ROKU WAS SET TO PCM STEREO OUT!!!!! AND HAS BEEN FOR YEARS!!!!!\n\nWhat is the best-case scenario for what output I was getting from my system? I'm excited to watch a true 7.2 movie on VUDU now!!!