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I'm using Ubuntu 14.04.2. When I opened the Sound Settings and my Bluetooth headphones were connected, I used to find only 2 options in the Play sound through pane (i.e., the speakers and the headphones). I could switch between the 2 and they worked perfectly.
Now, all of a sudden (not sure if I did something wrong), when I open the Sound Settings, I get this:
and only the speakers option works.
That is, if I connect my headphones via Bluetooth and select any of the other options, they don't work. I also never see the headphones option that I used to see when the headphones were connected anymore.