Rich... so, I know I told you I'm traveling for work and busy... but here I am reading the boards.
According to what someone told me way back somewhere in this post, you actually can hook up speakers to both A&B if you want the real movie theater effect and you have an amazingly long room (which I know you don't, so I believe that would be complete overkill). I have a 20' long room and use the A setting. I think I could just as easily use B with no effect on sound.
For the PS3, you do need to change to PCM for Dolby TrueHD and maybe a couple of others that I can't remember right now... other than that, I use bitstream.
