I wanted to make a real-time Color Organ that makes the colors of a movie react to music. Saw Deadmau5 doing something close in his stage performance. Impressive.
I’ve posted along with others about the desire to have an operator (or some other way) that can mute the driven audio (so I can use a “clean” version of the same song for output (without it being garbled). My post has not yet been answered, and I still want to do that, but can’t.