Yea, I did search Google but I guess I'll need to be more creative in my searches.

I did find some microphone auto-sensing switch schematic that might be useful and one for a telephone recording device. I was kind of hoping someone already did this for an iPod or something. Seems like someone in the world would have already marketed something that would send a “mute out” signal for devices that don’t have a “mute out.” Maybe they do but I don’t know what to look for.

The perfect device (IMO) would send a pulse a mute signal when auto appears so empeg will turn on the AUX and then pulse a signal when the auto shuts off to turn off AUX. That will probably be hard to find out of the box. My second best solution would be to pulse the mute, then wait for a timed duration, then pulse the mute again. The third solution would send a high or a low on the mute line while audio is present and then I would have to manually turn it back to empeg. Manual = “Bad Word”

Thanks for your help.