When u say cd player r u referring to a cd changer to go with your factory radion?

If that is the case yes you can buy a changer with RF modulation you would have to install it in the trunk , most of them come with a wired remote.

I was thinking of the same thing to but i ended up changing the whole system with a cassette player and a 6 disc cd changer the changer was so small i was able to easy install it in the glove box compartment , I prefer it that way because I would have to have to pull over to change my cd,s