As far as I can tell, this is a copy of the StarCraft: Remastered vinyl set, recorded and released by FFShrine user Laetteralus.
https://ralfcasino.com/forums-ffshrine/archive/t-221188.html
It is a beautiful soundtrack.
But unfortunately, Laetteralus initially released a zip where he mistakenly included unmastered Protoss tracks with a lot of pops. He then released a corrected zip. And what is uploaded here is the first zip.
If anyone can upload the corrected zip, with smooth Protoss tracks, it'd be a dream.
