New RIAA music data has shown streaming music starting to get mainstream acceptance in the US. Although the number of those paying for subscription music services like Rdio, Slacker, and Spotify in 2011 was small at 1.8 million users, it represented an 18.9 percent boost over the year before. Revenue was up by a smaller rate, at 13.5 percent, as the faster paid subscriber rate was partly offset by free or low-cost users signing up.
