[AE]

i had the same problem using my AKG N60NC Bluetooth phones. this worked:

install the free Ladiocast app, available at the App Store.
install Soundflower, also free.
switch the Pro Tools Playback engine to Soundflower (2ch).
route Soundflower (2ch) to a Ladiocast input and make sure that input is assigned to Main.
route the Ladiocast Main Output to your headphone driver.
play your Pro Tools session. viola!