When you say the song was copyrighted to AIP, what is your source? Are you talking about the film as a whole or the song in particular? Because AIP isn't a publishing company, and even if AIP had a copyright on the film, the music publisher would likely be the one to hold all rights to the song in terms of its composition and synchronous rights in terms of it being used in a movie. I'm not talking about the master recording of the song that you hear in the film, but the intellectual property behind that recording. Do you know who is the publisher of that song?