There is no sound more exciting to the racetrack customer than the trenchant, nasal exclamation of “They’re off!” by Fred Capossela. With this brief expression, the New York track announcer sums up the promise of clamorous jockeys, flailing whips and eager-to-race horses springing from the starting gate. (Tuite) Capossela was NYRA’s track announcer for 37…