I recently decided that I wanted the sound to come directly from my LCD. To do this, i purchased a converter (http://www.amazon.com/Cables-Go-Coax.../dp/B0002J2MV4) that allows me to go from digital coaxial to digital optical since the back of the set only has a digital coaxial out and the soundbar only takes an optical input.
I hooked up the cable from my TV to the box, plugged in the box, and connected the optical cable to the soundbar.
I can't get the sound to come out of the soundbar from any of my devices. instead, it continues to come out of the set.