WHEN the Lumiere brothers first showed the film “Arrival of a Train at La Ciotat” in Paris more than a century ago, the shot of a locomotive pulling into a station was supposedly so startling that much of the audience jumped back from the screen in fright. Simon Lee probably has a good idea of how they felt. He was conducting the orchestra in London for “The Woman in White” – the new $8.5 million Andrew Lloyd Webber musical – when he first saw the show’s computer-animated train barreling toward him from a dark tunnel, its wheels rumbling and whistle screaming. He ducked.