Mitch Rotter has been promoted to senior VP of content acquisition and strategy at Thumbplay, the company announced today. Rotter brings more than 15 years of experience in music and entertainment to his new position at the company, which he joined in 2005. The company credits him for having contributed to its catalog of more than 100,000 pieces of content in music, video, games and other areas. Rotter helped bring exclusive content from Jay-Z, Coldplay and Michael Jackson to Thumbplay’s library, the company said. He came to Thumbplay from Infospace Mobile where he served as director of content licensing and acquisition.