“Over the past six years, the record industry has successfully sued thousands of people in the United States for illegally downloading copyrighted songs.  . . Soon, though, the major labels are going to have a different copyright battle on their hands — one that will pit them not against those who want to listen to recordings, but those who created them in the first place.  . . The looming problem is the so-called termination rights Congress gave to creators of copyrighted material when it amended the U.S. copyright law in 1976.  The rights — which allow a copyright grant to be terminated after 35 years . . . [In 2013] holders of sound-recording copyrights can take advantage of this provision, which, in turn, makes recordings from 1978 potentially the first to be up for grabs.”