In the late 1960s, the scuttlebutt is that Beatle Paul McCartney has died and been replaced by a look-and-sound-alike. Obsessed fans think they find hints in the band's music, and the band, either as a joke or to boost record sales, embraces the rumor with "clues" like Paul's lack of shoes on the cover of Abbey Road. One of the better clues is the backwards speaking at the end of ''Strawberry Fields Forever,'' which some say sounds like ''I buried Paul'' when manipulated correctly. John Lennon, for his part, maintained that he was saying ''cranberry sauce.''