I figured out how the VST works. On the File menu, you need to open audio options . Crescendo seems to only work with 32 bit VST's. I tried about 25 different VST's none of the Arturia would work, and none of the Native Instrument would work, but Cobalt(free Vst) kind of a combination of Dw8000 and Kawai K3 did. Timewarp, Rapture, and SSI cakewalk Electric Piano worked. However Lounge Lizard wouldn't. So I think they need to be 32 bit and old. Then go to playback menu and select the VST you want.