DJ Equipment - A DJ CD Player or DJ MP3 Player or CD Player is a multi format unit that enables playback of digital mp3/wav files etc to and from a computer based programme via Midi or DVS based discs or provides CD playback directly via a standard DJ Mixer set up. Typical uses of these players would include mobile, club or home use and can be single desktop units or twin deck systems where 2 players are housed in one unit.