hey guys. I need some help. I currently am using Protools 6.4 with digi 001 interface. I have a midi keyboard controller and 3 sound modules(roland XV-5050, proteus 2000, and Korg Triton. I am able to run 2 of the sound modules through my MPC 2000XL through A&B with no problem. My problem is, how do I hook up the 3rd sound module? I thought I could do a "midi through" with one of the sound modules but that did not work. Can Anyone point me to the right direction?? Thanks in Advance....