I don't remember exactly what brand the guy used. It was done awhile ago.
I have a 160gb ipod, and even the interface from crutchfield that goes into the back of the monsoon stereo but I never use it. I've got far too much music and trying to make playlists out of my collection is just a PITA. I have a yearly subscription to Pandora :-)
I wonder if there's an input jack behind the stereo for a 3.5mm cable. Or maybe an RCA input. When it comes to car audio i'm pretty dumb! The ipod interface was already installed when I bought the car used.... I believe it takes place of the stock XM.