Need help! I have been gone around in circles with Dish Network. I have a VIP 722 using hdmi to Samsung dlp for video and optical from 722 to a 7 year old Denon amp. I get 1 second burst of audio about every 4 seconds on NTGEO HD, and a few other HD channels. All other HD channels produce dolby or PM audio fine! My AMP indicates NTGEO HD is dolby digital. If I reroute the audio to the Samsung DLP via HDMI and use the optical output of the Samsung and connect to Denon AMP the audio comes through on NTGEO and the few other channels. If I flip my AMP to "virtual" the audio comes thru fine but is just stereo. After receiving a new 722 and getting 500 different answers I am somewhat convinced my AMP cannot handle the dolby format from NTGEO but DIsh Network cannot verify if this is the issue. I also know that vip 722 does not put out dolby using hdmi. Can anyone please help with this? I don't want to buy a new AMP unless I really need to. Is anyone having the same problem or can someone tell me what the issue is with the Audio coding on NTGEO HD?