gonk,
Thanks as always for your reply. I got up this morning and was able to get in to the OSD. I was able to scroll through all the available surround formats with no problem. I just switched from Dish to DirecTV a couple days ago, and was watching an HD program last night which indicated the audio was in Dolby Digital 5.1. My connection for the audio input is an optical connection, and the default mode is Dolby PLX-II-C. In the past with Dish, when I switched to a Dolby Digital source it switched automatically. That's why I was at a loss last night when we were watching and it wasn't in DD. I couldn't get the buttons on the remote to accept DD. I checked this morning and my DD on the satellite receiver wasn't set to 'on'. One problem solved!! Still at a loss as to why I'd have to turn off the 970 though when I change an audio selection. I'll keep on eye on that and see how it goes.

john