It always seems like the ways to do a thing are the only ways, until someone dreams up a new one. You might be right, but historically speaking there seems to always be something someone overlooked. Maybe not in this case, but maybe so.

Look at the research on marine propulsion systems that have no moving parts - who would have thought it? Not that this idea maps directly to air, or Audio, but there may be things overlooked. I'm not holding my breath though.

I'll just continue to enjoy the music, however it is (re)produced.