Yeah, this could have been cool.

Put the Empeg into AUX mode, then have the Empeg output certain ASCII characters on the serial port, the serial port could then have a PIC to UniLink decoder and then one could controll a Sony MD/CD changer.

Or/And

I have been wondering how a slot loading CDROM drive would behave in a car when it comes to road shocks??
One could plug one of those drives into the car (I have a Chevrolet Astro and the original CD player is a 5 1/4 inch so there is space) then have a serial to IDE MMC command interface to control the CDROM thru the IDE connector. Don't know if this is doable. Maybe MLord have some thoughts, beeing a IDE driver writer??!

TommyE