"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!

"I don't know how they do it and don't care but obviously it can be done at least in some instances."

Which statement reveals that you would not know if you had been tricked into believing nonsense.


"I would also imagine that signals coming from nearby planets would be far richer in audio quality than the rather sterile sounds we get from pulsars which are immense distances away. "

Haha! Imagination is wonderful! And since no actual SOUND in audio frequencies we can hear without technical manipulation exists, you now need some mystical/magical 'Aether' substance which affect the transmisson of this 'signal' in some way to get your imagined effect.

Once again, the Law of Fives (self delusion) reveals that you are just making this up as you go along without the benefit of using any Science.