hey all, i didn't see this question answered so i am proceeding to ask it. tivo is not always recording audio. video is fine, tivo menu sounds are audible but sometimes tivo will stop recording the audio in the middle of the show or not at all. whats strange is if you change the channel, the audio for the new channel is usually there. i thought maybe it might be the cable company but i checked today, and no audio for mythbusters on the tivo tv but audio for mythbusters on the non-tivo tv. any ideas?