How do i compress mp3 music files and fit 600 songs on one cd?

I really want to know what computer software gives you the option to compress mp3 files, and will still play normally on my car stereo ?
Answer
Since the mp3 is already compressed you can utilize a program called nero to assist you in fitting that many songs on a cd. nero will allow you to change the format to .cda which is compact disk audio which allows you to play in any cd player or car stereo and will allow you to change the bit rate compression to a lower ratio to fit the maximum to a cd. johna+ certified professional