Broadway has seen no shortage of iconic, music-fueled films adapted for the stage in recent years, to varying degrees of success. “Sister Act” and “Footloose” met with mixed critical responses, but “Hairspray” knocked the ball out of the park, winning eight Tony Awards. “Flashdance” is the latest Eighties film to get the Broadway musical treatment, and the musical is previewing with a national tour before it makes its way to New York later this year.