////"they were cheating with a synthesizer. There's nothing wrong with adjusting the frequencies into the audible range or there would be nothing to hear."

Precisely the point - there IS nothing to hear, until 'magic' is done on it!///

LOL! So when I talk about the connections between music and astronomy, it's all stupid, superstitious, old gobbledegook but when some engineer converts inaudible frequencies to the audible range--a very simple operation actually--it's "magic"?