FrozenIpaq wrote:There's audio-in on these speakers (AUX and Digital) so it will work. All you'll need to do is hook up the the optical out on your TV with the optical in on the bluray player / receiver.
Just a heads up warning, here, folks.
Full disclosure - I do not own this speaker set or any other HTiaB set. I have two surround sound systems (one in the living room and the other in the bedroom), both are set up so all components run into an A/V receiver which then processes the signal and sends it out to the TV and the speakers.
If you set your A/V system up so that you run HDMI cables into your TV and then run an Optical cable from your TV's Digital Audio Out port to your amplifier, you will most likely only get a Stereo PCM signal. You may be able to force your amplifier into a Dolby Pro Logic setting, but any automatic signal detection by your amplifier will just go to Stereo mode, and you'll only get sound from the two main speakers and the subwoofer. Your center channel speaker and the two surrounds will be silent.
This is due to an HDMI hand-shake issue inherent to the HDMI standard. HDMI can automatically sense what is the best audio signal that the output device can handle is. If you send the signal from the source device (the BluRay) directly to the TV, unless you have a newer, higher end TV, the HDMI will sense that your TV only has two speakers and can only output stereo sound, so that's what it sends. Since the TV is only getting a stereo sound signal coming in, it can only send a stereo sound signal out of its Digital Audio Out port to the amplifier. Since your amplifier is only being given a Stereo signal, that's all you're going to hear coming out of your speakers - sound from the two mains and the subwoofer.
If you want to fully use all the speakers in your surround system ( and not just the two mains), you'll need to hook your devices (BluRay, Cable box, TiVo, Xbox, Apple TV, Roku, Boxee Box, etc) directly into your amplifier.
edit: From SCARRMRCC's post above, it looks like the BluRay is acting as your A/V receiver/amplifier in this set. So, like s/he said, you'll want to plug your speakers and other devices directly into the BluRay, and not into your TV.