No difference. I checked this myself.
as a sidenote – the game picks one of the songs in the appropriate folder at random. you can add to it as well, by copying an mp3 in, and naming it the next in the sequence (atmosphere_25.mp3 etc). i had 25-30 songs in each of my fodlers on my last install of it, some from LOTR or other things that match the tone. highly enjoyable
No difference. I checked this myself.
Vatovato is right! The introduction music is not the same in-game!