European copyright protection is expiring on a collector's trove of 1950's jazz, opera and early rock 'n' roll albums, forcing major American record companies to consider deals with bootleg labels and demand new customs barriers. Already reeling from a stagnant economy and the illegal but widespread downloading of copyrighted music from the Internet, the recording companies will now face a perfectly legal influx of European recordings of popular works. Copyright protection lasts only 50 years in Europe compared to 95 years in the United States, even if the recordings were originally made and released in America. So recordings made in...