Yamaha RXV665 Blu-Ray Audio settings?? I have a Yamaha RX-V665 A/V receiver I purchased a few years ago. I have everything connected to this: My Samsung HDTV, Sony S350 BD Player, Time-Warner Set Top Box. I have a 6.1 Channel System. When I first set this up and played my first Blu-Ray movie, after the movie previews, which I think are either 720P, or 1080i, and the BD movie would begin, should it not be 1080P True HD? I noticed this receiver automatically changed from the 7-Ch. Enhancer mode to DTS, or another digital Dolby HD enhanced mode. Now for some reason when I start the BD movie, the 7-Ch. Enhancer mode would stay the same, even though before I start any BD movie, I'd always go to settings from the BD onscreen movie options, and choose the 5.1, or 6.1 Dolby English. With this 7-Ch. Enhancer, the sound effects are still ok, but am I missing something? On the Yamaha remote, when I press the surround decode button, it says "Not available." I guess what I'm asking is, what Audio setting should be used for all Blu-Ray movies for full HD effect, and should the Blu-Ray players automatically change audio settings when the BD is inserted? Thanks!