hooking up XBOX 360 to a BDV-E370

[Slack2116]

how do i go about getting surround sound with this setup? i have the Optical Cable going from my 360 to the back of the BD Player with is where the speakers hook up to. then i have an HDMI cable going from the XBOX to the TV. on the TV i goto the channel and switch it to external speakers and i get no sound. with TV speakers i get sound from TV only. what am i doing wrong?

 

[davepuma]

Are you selecting the optical input on the home cinema system?