I have the Denon AVR 3806 and the new Oppo DVD player hooked up via HDMI cable, routed through my Reciever. Video is very nice, however when watching DVD, the reciever will not decode Dolby Digital playback. It's always in the Dolby Prologic mode no matter what format I choose on the DVD player. Am I doing something wrong or is this normal. I guess I'm asking if the Dolby Digital format can be played using HDMI cable.