This might be a completely stupid question, but here goes... I have a Samsung 931 DVD player and one of the output settings for audio is PCM or Bitstream. I'm not too sure what the difference of the two are, but when I set the output to PCM, I can only get 2 channel sound, but when I set it to Bitstream, then I can get DD5.1. Is this correct behavior? I'm using my receiver's DD decoder.... I could've sworn that on my old Sony DVD player, the audio output was set to PCM and I was still able to get DD5.1 sound. Can anyone explain why this is happening, and what exactly is the difference between PCM and Bitstream? Thanks for any help!