Update - the original soundtrack can be found on Larian Vault right now - except - it's only in WAV format unlike item description ( "All tracks from Divinity: Original Sin 2, in FLAC and WAV." )
Maybe Larian could provide FLAC format at one point for convenient. It takes me quite some time to find a proper (without lots of bloatware hidden) converter to convert all files to mp3 & FLAC.
