Attempted to play a "backed up" DVD on the DV79 last night but could get no sound initially. Finally twigged that the sound track might be MPEG so quickly loaded a retail copy of "Lord of The Dance" (definately MPEG Audio) into the DV79 and again was greeted with no sound! At this point I should mention that the only audio connection between my DV79 and AVR300 was the Co Axial digital interconnect. I quickly connected an analogue lead and "bingo" full blown audio from the speakers. I then removed the lead leaving the Co Axial interconnect in place, no audio again. I then entered the DV79 setup menu and set audio out to "PCM 2CH". Instant 2 channel sound was the reward . However................... All other DVD's with DD 5.1 soundtracks only produce stereo sound, Dohh!! Set audio (in DV79 setup menu) back to "Bitstream 2 or 6 Channel audio" and all normal DVD's now produce full 5.1 channel sound . However............. Lord of the dance with MPEG audio now produces no audio, Double Dohh!! Now I know I must be doing something wrong, because my Tag DVD32R never used to have this problem. It used to simply pass the signal down the Digital interconnect to the AV32R where it was decoded, without any fiddling with menus etc. So............. what have I not set up correctly in the AVR300 menus (or DV79) that is causing this problem?? Thanks, Gerald.