I plan to buy a 2005 this week that comes with the factory 6 cd in dash changer. I was also going to have the tape player installed too (because I have a decent amount of tapes I still listen to). But I also listen to Minidsic's a lot and want to put a MD changer in the trunk. Does anyone know if I can have all of these hooked up to the factory head unit? I remember seeing a button that said tape/md, but I didn't know if that means there is only 1 input available and if I get the tape unit I can't get the minidsic unit. Is there a factory/dealer installed minidisc player?

The lower port of the radio can have a tape player module or MD module installed. If you want to add a aftermarket trunk changer (nothing offered from Mazda) you can use the port in the rear of radio using a PIE adaptor sold at www.mazdaparts.com

I ended up just getting the factory minidisc player and keeping the single cd player.