Denon DVD-9000 Operating Lnstructions page 53

Use this function with video and music CDs to play the tracks in random order
This function does not affect with DVD.
Remote control unit
In the stop mode, press the RANDOM button.
* The random play screen appears.
Press the PLAY button.
* The tracks start playing in random order.
* Random playback is not possible for some discs.
* To return to normal playback:
Main
unit Remote control unit
Press the STOP button to stop random playback, then press the RANDOM button once.