Internet radio firm TuneIn is adding more than 600 radio stations to its service through partnerships with more than 20 broadcasters. They include music stations from deals with GoRadio, Laut.fm and AccuRadio. However, we wonder if there are growth issues for TuneIn. The company tells Billboard it has grown its monthly active users (MAUs) by 113% to more than 30m in the last 12 months. Which is fine, but the company was talking about 30m MAUs in January this year.