Lol, this community is simply amazing already :D

Somebody just reverse-engineered the App and the files' encryption and poured it into a simply python script, see the comments in this thread.

:O Wow.

That is just simply amazing. Can confirm it works.

The file names are always the same, prefix and the sounds name, e.g. if the sound is called "The Electric Forest" it's com.HolographicAudioTheater.Naturespace.TheElectricForest.

I guess I could write a scraper and parse the whole collection.

Well, thank you kind stranger on the internet.

Ha, I was just writing an update when your comment came.

I followed your advice and installed mitmproxy (basically fiddler2 but open source), which was easy enough, and managed to find that the app just posts GET requests the homepage, which result in a 302 Temporarily Moved, which ends on a public S3 folder.

The GET request includes some "ID", which I'm not sure I should post publicly, maybe it might identify me? It's like:

GET http://www.naturespace.com/ns5ios/?command=download&path=%2Fmedia%2Fmodules%2Fcom.HolographicAudioTheater.Naturespace.Aegir&lang=en&id=REDACTED&bvrs=5.15&sysv=16.5&model=iPhone&bid=com.HolographicAudioTheater.Naturespace&sys=iOS&loc=en_DE HTTP/1.1

But yes, it seems the files are encrypted. I couldn't find anything to open them, and no file identifier knows what it is. If you manage to get somewhere, that'd be awesome, my tech knowledge definitely ends here lol.

I guess it's not actually illegal to post this, since it really is just a public folder, so if anyone els wants to look at it, here's a file.

Ah, thank you! See, it didn't even occur to me to just intercept the audio in transit. That's really helpful, I will try this, thank you very much :)

Yes, I thought about that as well, but if possible I would prefer to retain the original data (also I just like to tinker with stuff :) ).

However, like you said, they're doing some "spatial" stuff they don't disclose. I assume it's just some EQ, but if they really have some algorithm to compute HRTF or even they're own audio format, then re-recording might actually be the only solution.