Any of you guys connected the external speaker connection from the CB and/or Ham radio into the aux audio circuit? I am playing around with the idea, but not totally sold on the idea yet. The main "problem" is that I like to have my CB or 2 meter on most of the time. This setup would not allow me to listen to regular FM while having the other two radios on. I imagine I could build a simple mixer box where I could feed the CB, 2 meter, and Ipod into the Aux at the same time at least. Any thoughts? Sound like a fun engineering project?