5-0, when you go into the bluetooth advance settings, and looks up the profiles under the paired phones, it should have an a couple of profiles next to your phone. One will be "HFP" (which is the phone part) and one should be "A2VDP" (or some acronym like that). Check to make sure you have the second one activated, as if it isn't, you won't be able to stream music over bluetooth.
Worth a check ?