No CD changer support,but you can fit about 40 CDs' in mp3 format on a blank DVD.I'm going to take the unit back out tomorrow and open it up and see what can be done regarding rear usb .It might be possible to solder a lead onto the pads and run it out the back.Just been out and bought a 2gig micro SD to put some tunes on and I'm going to load my tom tom files on the supplied card and see which is best.
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