Hook it into AUX channel of the amp. Like elje said, dig deep into the TV menu and play around with the audio settings. Now what I did on my Vizio LCD, was take the digital audio out, run it through a converter, converter has to RCA L/R out jacks, plug that out into the in on 1983 Pioneer dynamic range enhancer and then to the AUX channel of the same era Pioneer amp. Talk about killer TV sound!!! YOu can get those digital to analog converters on ebay. I did it your way as well, but not happy with the quality, so I tried it the way I just described and the difference is night and day. Also, any kind of gaming you got running into the TV, any sound coming out of the TV will go through your amp set up. You should hear Rock Band through my setup....will blow your mind.