It was a time when music fans copied and traded recordings without permission. An outraged music industry pushed Congress to pass anti-piracy legislation. Yes, that time is now; it was also the era of Napster in the 1990s, of cassette tapes in the 1970s, of reel-to-reel tapes in the 1950s, even the phonograph epoch of the 1930s. Piracy, it turns out, is as old as recorded music itself.