On 6/6/2010 10:19, Ed Pawlowski wrote:

The AC has a remote to control a few functions. The new receiver has a
remote with many functions. Coincidently, the volume of the sound system
is the same signal as the temperature on the AC unit so I was moving
them both up and down at the same time.

Some devices have a remote address setting so that you can have two
similar units in the same room and not have the remotes conflict with
each other. You may be able to change the address for the audio system
so as not to conflict with the air conditioner. If not, you may need to
cover the IR receiver on the air conditioner and control it the way
grandma did.