Just bought a 2000 XLT with base radio (AM/FM/Single CD)it also has rear audio controls with headphone jacks in the console. I was told rear headphones could listen to one mode (i.e., CD) while I listen to FM through the speakers. Now I am told I need to upgrade to the AM/FM/CD/Cass to achieve this. Anyone know about this and is there any way to wire my current radio to achieve this result. Thanks.