A good program for burning mp3 cd's is NERO burning rom. You can download a copy form limwire.com. I use this program for burning and maintaining my music files. Tip: in mp3 format a typical cd can hold over a hundred songs, this can be cumbersome to scroll through when trying to find a particular song. for ease of use, you can save each artist or genera in a folder. Most titan factory cd changers have the folder selection option. Makes finding songs easier.
Also BEWARE! I had my whole cd changer full of burned cd's and it just stoped one day! no radio/cd/sat! the dealer told me it was the burned cd's that caused the malfunction. it was replaced but now i only have a couple in at a time.