For those still wondering, yes the in-dash cd changers will control an aftermarket cd changer! I just installed one yesterday in my 03 TL-S. I decided to go with Clarion, because Peripheral has a Honda/Clarion adaptor with RCA inputs, which I'm using to hook up my Archos MP3 player. And, the clarion adaptor is only $40 at www.autosoundgear.com. I got a 12 disc cd changer (M-bus) off of e-bay for $130. Easiest way I've seen so far to add aux inputs to the factory head unit.