New guy here, have a question then hopefully I can help other people out here too. (This post could probably fit in other forums too, but it probably fits best here). We just got a flat panel LG HDTV installed on our wall, and I purchased an optical audio cable to connect it to my computer. I have the cable running from the optical out on the TV to my optical in on my computer. When I do this, I get sound out of my speakers when on regular (analog) cable channels, but when I get up to the digital channels (HD channels and music channels) my computer speakers make a faint "click" sound and they go silent. Does anyone know why this would happen?