The VST editor pops up, I choose the voices in each of the slots, make sure it is in song mode, and can route additional midi tracks to different voice slots (1-16). If I add the MOXF to the VST 'rack' and create a MIDI track, everything seems to works as advertised. I have my MOXF plugged in my computer via USB. I am using a Focusrite 6i6 as my interface and also as the driver in Cubase. First disclaimer is I'm just learning all this stuff and am fairly clueless.