Looking to upgrade from the 6 CD changer to one that also plays MP3 CDs - hopefully a 10-disc model.

Can anyone recommend anything that will:

a) be compatible with the concert (thru existing connector)
b) fit in the boot in the same place as the old changer

Understand I might need a lead adaptor to fit the existing connector - is there any way to find out what is and isn't compatible using these adaptor leads.

I have BOSE if that's relevant.