I upgraded to a 1080P television and a Blu ray player. On a couple of Blu ray disks that I bought, Chris Botti Live, and Black Hawk Down, one of the sound options is PCM 5.1. I used audio cables to connect the five speaker analog outputs from my Blu ray player (Panasonic BD-30) to the corresponding analog inputs on my receiver. In my Blu ray set up under audio, there is something called PCM down conversion. I have tried it at "on" and "off" but when I choose PCM 5.1 from the disk audio option, my receiver does not indicate my rear speakers or sub-woofer as being active. My receiver is connected up to my Blu ray player using a coaxial cable as well which works fine when I choose sound options such as Dolby Digital 5.1 and DTS 5.1. For digital sound in my Blu ray set up, they are all set to Bitstream. Anyone know what I need to do to get PCM 5.1 to work? Thanks.