A CD ripper is a tool you need if you want to make MP3's of the music you have on your CD's. It will
take ("rip") the music from the CD, and save it as a wav-file on your computer. You will then have to
use an MP3 encoder to convert the wav-files into MP3 format. I recommend RealJukeBox because it rips from a CD directly to .mp3 format in 3 different sampling rates.