The In/Out loop from computer to MPC should work without any problems as long as you have your individual softsynths in your DAW set to receive on the same channel as the one your are transmitting from the MPC. As well, and it should be obvious, but the MPC must also be setup to a Midi track.
Also, yo may need to adjust your latency settings in your DAW as well so there are no timing issues (usually this is not a problem as midi is pretty fast but there have been reports from some that they have had timing issues in the DAW so refer to your DAW documentation if you need help with this)
Each DAW is different but if you need help on the setup and are using protools, this thread here is very helpful:
http://www.gearslutz.com/board/rap-hip- ... encer.htmlIf you are using Ableton Live as I am, Akai has a thread here that is helpful
http://www.akaipro.com/syncabletonThe above thread gives you 'ins/outs' of routing but the midi setup is the same to run your softsynths from the MPC.
Last note, It is key to have the MIDI IN/OUT LOOP from the computer (via your interface or USB equipped Midi controller) coming back into the MPC's MIDI in if you want the MPC to remember the tweaks you do on the softsynts.
Otherwise, the MPC will only play back the note information that was sent to it via your controller's MIDI out since the routing is such that the computer is the last item in the Controller-MPC-Softsynth chain.
A perfect example of this is when I use my Novation Remote 49SLMKII controller. It is my MIDI interface to the computer and essentially, sends my midi notes into the MPC via its hardwired MIDI outs but also sends the knob tweaks from its own control surface to the softsynths, via its USB port. That being said, the MPC is not receiving the knob tweaks of the Novation controller UNLESS I route the MIDI output from the channel the softsynth sits on in the DAW back into the MPC.
So, to make something that seems hard, simple the setup would be this:Midi out of controller (or computer MIDI interface) to MIDI in of MPC.
MIDI OUT of MPC back into MIDI in of controller (or computer MIDI interace)
Voila!, Simple.You can use the rest of your MIDI ins outs on the MPC for your hardware modules, etc.
Thats it. The rest is just a matter of setting up what needs to be done within your respective DAW's MIDI settings.
Hope this helps