How can I change my DBEdit settings or DM800 settings so that my default audio is not MPEG (NAR).

I have tried everything I can think of, but whenever I go to a movie Channel or Music, I have to press the "Audio" button and manually change the audio to AC3.

It seems to think I am deaf and wants to default to Narrative all the time.

Please help, it's driving me MAD!

Thanks