@RoccondilRinon & doubleofive: Thank you for your quick replies!
I guess I will have to live with the SL NTSC version then. Since all I currently own are the DVDs with the original version as bonus and another unauthorized P2P copy.
I really like some of adywans additions and changes, but adding custom music is a definite nono for me (and from what I read many others agree, hence the purist version), so I'm really excited about seeing (and comparing) both versions. :)