Be Excellent To Each Other

Mrs. wookie recently acquired a lovely speaker dock for her Galaxy s3, the idea was that she would set an alarm via the Tuned In radio app and then could wake up to it through the speakers. This did not happen, instead any alarm plays through the phones own speaker regardless of what its connected to. The dock is bluetooth so the phone sits on the cradle charging while it plays music through the bluetooth, thought this might be the problem so plugged the phone into the aux but the alarm still plays through the phone's speaker not the audio jack.
Does anyone know of a way to make the phone play it's alarm tone, in the form of streamed audio, through it's bluetooth channel or, failing that, out of the audio jack?