Blu-ray player 5.1 audio output

[steam03]

Hello all,
I'm new here because I was trying to find a solution to my question and ended up on this site full of useful info!

I just got started on the HD and blu ray side of life, got the Samsung 52" LCD + HTiB + P1400 Blu Ray player as a bundle.

I hooked up my Blu Ray player via HDMI to the TV and TOSLINK from Blu Ray to the HTiB Receiver. Also tried a BR movie; the picture looks stunning but I was unable to get the 5.1 Sound going.

The receiver can output sound thru all 6 speakers without a problem when DVDs are played thru that receiver (or DVD player). But when TOSLINK is connected to BR and receiver, it only has sound for front speakers playing BR movie. I played around with the PCM and bitstream outputs and it only sounds like bitstream has a bolder sound but still only coming out of front speakers. I also adjusted the Audio on the BR player to output DD MultiChannel when the movie is playing.

Any ideas why my rear speakers won't output sound? Any Setup tweeks I should do or try? It is a wireless rear speakers and I double checked that the wireless receiver is receiving OK.