Spotify has said it won't launch the US version of its service until 2010. Company CEO Daniel Ek cited the need to explain the service better to US audiences.“Most people are not still not aware of the service or how it works – so we have to do spend time educating the market," he said, "The US music labels want to get there and are very excited about Spotify but there are thousands of publishers we need to get signed up and fully informed about the service,” he observed.iPhone users in Europe have taken to Spotify because as well as allowing them access to streamed songs from millions of acts, it also lets Premium users download Spotify playlists for offline playback - all legal, and all for around $15 per m