I have a Denon AVR 2807. When I play TV it comes in surround sound. My XBOX plays in surround. I just bought myself a Blu-Ray DVD player and hooked up to Receiver with HDMI port 2. When I play a DVD, the sound is only coming out of the Center, both fronts, and sub. Not coming out of the 2 rears. I tried to go into speaker configuration, but none of the settings seem to work with all speakers. Am I missing something here with the DVD player?