Last night I purchased a Sony Bravia DAV-DZ170 all-in-one home theater system. It came with speakers, a woofer, and a DVD-player/receiver. I'm having a problem getting blu-rays and video games to play in surround sound. I have the receiver hooked up to the tv via an optical line. My ps3 is hooked up to the tv via hdmi. Is there a way to get surround sound out of the blu-rays and video games? I have surround on certain HD channels from my cable-box and I can watch DVDs with surround sound when using the dvd player. But I really want to be able to watch blu-rays and play games, on my ps3, with surround sound as well. Any suggestions???