Not too well-versed in car audio. My 2006 Mustang came with a Shaker 500 system (includes CD changer). Is there any way to add an iPod adaptor to this setup without having to disconnect the CD changer? Anyy way to run it through AUX without disabling my ability to use the CD changer, in other words? Every product I've seen so far says that it can't be done.