Here we go :
Very nice ! May be you should promote "Direct Sound" input devices instead of good old "Windows Audio" driver.Of course use ASIO driver for better latency when available.
Question, how do I do this but with an existing pre recorded music track that I have? Like if I wanted to make a music video. Thank you!
For this,Add your sound file to the compo timeline, then just enable "output channel" parameter from AudioSpectrum.
This should do the jobsBest regards.