Gets the job done  just open app  click speaker  and audio already playing or future audio is immediately routed to the bluetooth device (Android 5.1.1  also putting on my other two Android devices). When done app doesn't stay around in the background bloating things up. Tip: to start  open app  click speaker  then click the standard Android O button to go back to home screen (don't click <| arrow or app will exit). Then when you want to stop routing  open app and just click <| to go back  which will quit app.
April 28 2016