I think on the PC you cannot add samples from a CD. You have to save them on the computer as WAV files, and import them in Music 2000 from the Load/save menu. However I tried and it didn't worked with all WAV samples. Maybe the file format was wrong, but it should work with most others. Keep in mind that the sound will turn mono though so you may need to use the stereo trick in the Music 2000 section of the website