As a user, I want Plane9 to allow me to select which audio source(s) I want for visualization purposes for either standard or virtual audio channels. I am currently using a USB audio headset (SteelSeries Arctis Nova) which uses virtual audio channels and plane9 can't seem to see it at all and no way to point it to the channels. It's very frustrating as I absolutely love this visualizer and wish to keep using it.