So I have a video of a sphere sort of thing where the sphere opens up and gets bigger. I'm trying to figure out how to sync the video with a song so that as the audio levels go up and down the sphere gets bigger and smaller. The only thing I cant figure out is how to make them sync together so when the audio levels are at 0 then the sphere video is at 0:00 and when the audio levels are 100 then the video is at the end where the sphere is all the way open. I'm using after effects for this. Some one please help me out.