I am using SuperTV for viewing TV on my Desktop. The settings in SuperTV shows Bluetooth Headset as one of the options for Audio Output, even after selecting that nothing is audible on the bluetooth headset
Try to set the Bluetooth Headset the default system audio output, system icon tray -> mixer (or control panel-> sound ) -> click on 'device' and select your headset device :
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If you still can't hear the tv audio output, then most likely the tuner's audio is connected directly to your speakers - that's why you don't receive tv sound in your bluetooth headset. You may need to connect your tv tuner audio output directly to the headset.