Module and 2500

Whats up yall... I know yall have got a million questions on this, believe me i have been searching. But i am trying to get my Korg Rack and my 2500 synced up to record the midi data. i have looked at a few post about recording the midi data and having the audio going thru a mixer? I dont have a mixer. I have a Axiom 61 midi keyboard, an MPC 2500 and a Korg Rack.

Can someone please help. I have been reading the MPC manual (page 53) now for like a hour and still cant get it.

ps... I think i have the midi synced up right.. just not the audio? Out from the Module to where in the mpc?

You can run the Outs of the Module to the (Record In/INPUT THRU) on the 2500.
Press the INPUT THRU Button next to the Rec Volume.

OR

You can buy a Mixer.

thanks for the reply, Ill search through the manual for the input thru part...