Connecting a turntable to MPC or ?.....

I have been using the small numark turntable that connects by instrument cable to the "record in" input on my 2500. I just recently upgraded to a stanto dj table which has a ground wire. Where and how do I use this? I dont have a reciever. I do have an M-Box. Please help.

You need a mixer or a preamp to go with your Turntable. Once you have that you should be good.

Screw it to anything metal. It will keep your turntable from humming.I just loosened one of the screws on the back of my mpc and put it there.