Laptop/Home Theater/HDTV Interface

Hi everyone, I have a Toshiba HDTV with every kind of input/output jack you can imagine. I also have a Sony DAV-HDX275 BRAVIA Home theater. I specifically bought it b/c it has an optical digital audio input jack, and a coax. digital input jack. (I want to get surround sound from not only the dvds in the player, but the TV, and my laptop). I bought a HP Pavilion with Blu-ray player, and HDMI port. Here is the problem. There is no HDMI port on the home theater, so I plug HDMI from laptop to tv. No problem Pic and sound through TV. But I want sound through the Home theater. I connected a digital optical audio cable from the tv to the home theater, and can hear the audio from the over the air tv station, but no audio if I am running a movie from the laptop.

Yeah I had that problem before I got a New Amp that had HDMI. I never did this but you can buy an external USB sound card for you laptop that will have a Optical out so you can plug in directly in to your amp then the HDMI in to you TV
Unless you laptop all ready have a Digital sound out all ready that is you only option.

Here is a external sound card
http://us.creative.com/products/pr [...] duct=17751