I guess the question I should ask is how do you program the knobs, sliders, or buttons on your controller to control the SD40? As an example, I also use Dan's vArranger which runs on a PC Laptop. I use a Roland A-800 Pro 61 key controller and have all the various controls programmed so that I seldom if ever have to touch the Laptop while playing with the vArranger. I can change variations, control sound levels, select endings, select songs, styles, and sound from a list etc.. just about everything you do with a normal arranger keyboard. That is what I would want to do with the SD40. Is that possible?