Okay, I hope I don't sound like an idiot here, but I've spent most of the evening trying unsuccessfully to google an answer, so I hope someone here can help me out. This week I finally picked up a receiver with HDMI inputs (Yamaha RX-V663) so I could fully enjoy the sound from my BD and HD-DVD players (Panasonic BD-30 and Toshiba HD-A2). On the discs I've checked, the HD-DVD player outputs TrueHD as PCM at a sampling rate of 96khz. However, I've only found one BD in my collection with a 96khz sampling rate, and that was using DTS-HD -- everything else is 48khz, both TrueHD and DTS-HD. Why is this? Is it simply because most BDs use a 48khz sampling rate? Does it really make any noticeable difference, or should I just relax and enjoy? Thanks in advance for any responses! Mark EDIT: Is there a website that lists the sampling rates of HD discs?