Along the Google Music lines but different you could make the Empeg the "main" source of your music library. Have your Android App connect to it, stream music from it and make music available offline by downloading it from the Empeg. Like Google Music but without Google- the Empeg would replace Google Servers. This could all basically be done with the Empeg web frontend. It would probably be better done by making a dedicated server app that would run on the Empeg and respond to request from the Android device directly and with less overhead.