Geoff Schultz wrote:
The DVD only has RCA jack outputs. It plays fine through the TV but
when we try to play it through the Aux In on the stereo it just
generates a buzz. The TV has no audio outputs. I think that we have
some mis-matched impediances.


Buzzing indicates a ground loop. Mismatched impedance will manifest
itself as weak/loud/distorted sound.

Google for "audio buzz ground loop".

--
Kees