one ?

I have a mpc 2000xl without the 8 outs a cheap midi keyboard,a kord 05R/W midi sound mod and a Roland VS-880EX Digital workstation my ? is how do i hook eveything to the work station i have the keyboard to the in midi on the mpc and the out of the mpc to the midi sound mod, i hear the mpc thru my speakers and the keyboard thru the sound mod with my headphones so how can i put everything thru the work station

no need to double post dude