Better Keyframing! (Music Overlay Script)

This is a simple script that makes it much easier to keyframe music animations by hand. It plays your music while you're editing the animation as well as displays an audio waveform.

Example: https://www.youtube.com/watch?v=yd2b5PoFQp8&feature=youtu.be (now also supports instant audio replay: https://www.youtube.com/watch?v=wMIARFm8cug&feature=youtu.be)