Help me help a friend with his surround sound issue....

[SBrooks1]

Friend of mine online is having some issues with his PS3. He's using optical and he's not even getting DD 5.1 from Blu-ray's. Here's what he said....

So my problem is that I put in Pirates of the Caribbean and I get no voices. I get all the sound effects and all that crap, but when they speak... nothing. So I decided to play with the audio settings on the PS3 a bit. I can get the voices to come out, but I have to choose "bitstream" as my output on the PS3. Problem is, when I choose bitstream now I lose my surround sound and everything comes out of the front 2 speakers. I have tried changing the audio track in the BR movie itself (from DD5.1 to DD 5.1 uncompressed) but that made little difference.

What's his solution to just get DD 5.1 working from it? I can't remember.