In theory, you could use WebRTC to stream data from phone to phone as P2P connections. I've also been toying around with a Spotify streamer, which uses websock

In theory, you could use WebRTC to stream data from phone to phone as P2P connections. I've also been toying around with a Spotify streamer, which uses websockets to stream data from open.spotify.com to client side using binary websockets. I managed to create it natively without using any client side JS libaries, so as soon as binary websockets will be supported on phones, I'll be able to stream music to my phone. The music is playable trough HTML5 music player and currently works on mobiles with a workaround, where the music is first piped to a file and then referenced in DOM. Sadly, the hosting service took my servers down because of DMCA and for the same reason I've kept the source code private. It is written in node.js