I've been working on this video, documenting an instructor training we recently hosted at Brookline Tai Chi:

Our director, Perry, selected music, but YouTube came back saying it was copyright infringement to use that track. Ok...so it gave me an alternative called AudioSwap. This is unbelievable. Basically, YouTube has a soundtrack generation engine, that you can browse by genre and artist and even filter per the length of your video. All of the tracks are fair game to use. You preview the new track and if you like it, YouTube overwrites the audio on your video with the new music. Problem solved. Indeed!