Have Bravia 46EX640 and AV Receiver STR-DH520 and really need help. We have 5.2.1 set up and cable hdmi input into receiver and hdmi output into tv. Everything works fine. We have a DVD player hdmi hooked into receiver, and everything works fine. The TV has built-in netflix and we can sign in and play a move, but have no sound through receiver. Hooked up an OPT cable out of TV into receiver, then play the movee after setting the Auto-Analog-OPT option on receiver to OPT, but still have the picture, but no sound. Other than listening through TV speakers, how do we set up to receive the sound through the receiver? Thought the OPT cable would do it, but apparently there is a setting somewhere we are overlooking. Thank you to anyone who can instruct a newbie to this surround sound thing!