Of course you can stream music. In fact you can stream from Spotify too if you want. I have no idea why there is so much confusion out there about Android auto and CarPlay but this is just silly.
http://youtu.be/5Cl2aTsh6lA
Take a look of some basic examples, probably worth watching this and other videos to know what to expect.
http://youtu.be/5Cl2aTsh6lA
Take a look of some basic examples, probably worth watching this and other videos to know what to expect.