FL, I've recently discover I can open it as VST inside a Host DAW (in my case, a FL Studio Inception).
Tried to play with it, following the [url=http://www.image-line.com/support/FLHelp/html/fruity_like_plugin.htm:1tp5qeka ...
forum letting ya ll know, that some keys are working in the VST instrument mode of FL Studio
-Numpad
-CTRL -key ( with mouse, but not with X,C,Z Shift+Z etc )
and some other keys work in the VST i mode ...
forum