I apologize for the confusion.
The television doesn't act as a decoder for optical signals via HDMI. The only 5.1 signal that will pass from the television's optical input is from the tuner for OTA broadcasts. For surround sound from other devices, the optical should be hooked up directly from the source (game console, Blu-Ray, etc) to the optical in on the HT system. Otherwise, the audio will be sent in stereo.
I hope that provides some insight.
Hello, I just bought the package deal at best buy that if I purchased the UN40B6000 LED-LCD tv I also got the BD-P1600 Bluray player with it for free. I get it all home, set up and everything connected correctly. I have the bluray player hooked up to HDMI 1 with a nice monster HDMI cable, and a monster optical audio cable going from the TV to my Samsung HT-SK5 5 disk dvd player with 5.1 surround sound built in as well. The thing is the surround sound system only uses the left, right, and subwoofer for sound, even though it is hooked up through the optical audio from the TV. I also tried my xbox 360 through the TV with the HDMI cable and that also only ends up using 2.1 audio instead of 5.1, which it used to when I had it hooked up before directly to it. Its upsetting to have a good sound system, and want the amazing picture to go with it, only to lose the sound when I get the picture.
Any insight would be helpful, it just doesn't seem right that a "top of the line" TV like this would only support 2.1 audio. Thank you in advance!