It was a lot more than drops of Jupiter.
Concertgoers at the Jones Beach Amphitheater had to run for their lives as thunderstorms swept over the waterfront venue Saturday, delaying a show by the rock band Train.
Videos posted online showed fans scrambling indoors as whipping winds, driving rain and lighting struck the Long Island beach, with the crowds huddling while waiting out the storm — at one point breaking into “Hey, Soul Sister,” one of the San Francisco-based band’s tunes…