Hello, I would like to introduce you to an application on behalf Mp3 In Pocket, although it is similar to the way Spotify but we do not resolve it, here you can play songs only when you have enabled data or wifi, you can also download the songs. In this application, you can upload music to your library, or you can do a total library for all users. Applications currently running in beta, has yet to occasional outages but you can still test the application and you can send us feedback if you've added, improved or what you would on the contrary erased. I enclose a photo application and a link to the application you are https://drive.google.com/open?id=0B9pz1Fh4fv1hTjRra0hxVDg3Nk0