This compact waterproof marine stereo has no CD player. Instead it has an AM/FM radio and RCA Aux audio inputs on the rear which can be used to play the audio from iPods, portable satellite radios, etc. It also will play your digital MP3 or WMA files when you connect your MP3 player or Flash drive to the rear USB port. MP3 players will also be recharged. You may also stream your audio wirelessly via Bluetooth using a Bluetooth compatible device.