I have tried hooking up my new DVD player to my TV, the yellow input gets the video through fine, but the sound doesn't seem to be coming through with the red and white. I think potentially the audio inputs are broken on the TV. The sound on the TV works just fine with my Digital Cable Box. Is there anything I can do to hook up the audio seperately? Like hook the DVD player up to external speakers or something? Or can I run the audio through the cable box?