Don't waste any of your time or money on this app because Amazon sure isn't spending any of theirs on it! I have never paid for unlimited, only bought songs and albums. I'm not paying Amazon any more money for music. It won't download songs correctly. It gives an error message when I try to stream some of the music I paid for. How is a song that you store on your server incompatible with the most current version of your player? If you lost the rights rights or whatever is wrong, give a refund.