Bluetooth headset A2dp on iPad not working This seems like a basic tech support question, but google is failing me....

I just paired a bluetooth headset (single ear) with my iPad. This headset is known for having a very good a2dp profile built in and is advertised to allow one to stream music from one's smartphone in addition to taking calls. 

So far the only app that has given me audio in the headset is Talkatone (a VoIP app). iTunes U, iTunes, google chrome, safari, and YouTube output audio through the iPad's speakers. 

How do I configure any of these apps to use my headset for audio?
My mistake.  I did consult the headset manual, which had one sentence about A2DP, which just said essentially "it only works on phones that support it".

In fact, all I had to do to move from where I was to the headset working as I expected was to force-close and reopen each iPad app that I wanted to hear through the headset.