Paul Anthony Troiano has built music licensing company Rumblefish since 1996. Only when his daughter was born, 11 weeks ago, did he think about leaving. "It's a good time to step away and take a break," he said. "And start something new at some point." Troiano revealed Wednesday he plans to shift the company's day-to-day operation to other managers. The three vice presidents will now run the show. He will stay an active adviser for the company. In 2013 Rumblefish was bought by SESAC,...