How to hook up your drum module to play drumless tracks from your cell phone, ipad, tablet or PC! If sound is not a problem a good PA system works great! Visit our friends at Rockville USA!
The MIX IN or AUX IN on the your drum module can be used to connect an external CD player, mp3 player, PC, and cell phone if you have music stored on it. Once connected you can play your drumless tracks sounds along with the songs in the external player.
- With a stereo 1/8″ – 1/8″ cable, connect one end to your external device’s headphone output (mp3 player / phone etc.) some are 1/4 jacks.
- Connect the opposite end to the MIX IN or AUX IN input on the side panel drum module.
3.Increase the headphone volume level on the player, and then play the song. 
4.Turn the VOLUME knob on the your drum module to adjust the volume level as desired.
Also here a link to How To Play Back Your Songs Plus Record!