A previous empirical study suggested that as copyrighted songs transitioned into the public domain they were used just as frequently in movie soundtracks as when they were still legally protected. That study, however, did not account for the number people who viewed each movie in the theater....

A previous empirical study suggested that as copyrighted songs transitioned into the public domain they were used just as frequently in movie soundtracks as when they were still legally protected.That study, however, did not account for the number people who viewedeach movie in the theater....