I've been getting a lot of my media onto my system to play through my Sony X800, and I've been noticing something weird. 5.1 FLAC plays fine in surround (although it seems to be activating all 8 channels on my AVR). However, playing 4.0/quad FLAC files, it only outputs them in stereo. It shows the proper bitrate and looking at the files through windows they're clearly in quad, but it doesn't matter. Note that this isn't a matter of user-created files not working - I've been testing with the EMI 4-channel DVD-Audios (which I've ripped from my collection) and it plays the FLACs all in stereo. Has anyone else noticed this? I'd also guess it's a problem with other Sony players, since they all use essentially the same software.