Feature Request: Audio only stream?

Is it possible to have an audio only stream? Occasionally when out of the house, both my wife and I would like to be able to listen to streams without having to to have the screen on showing video (her listening to news while watering plants, me listening to game while mowing, etc). Bandwidth wise, would be much smaller I would imagine.

Check out this existing thread:

Thanks, should have searched more thoroughly. I'll just say I'm jumping on the bandwagon.