Well, back in the day I got my hand in the bootleg NTSC USA ISO of this game. The thing is that just by changing some data from the header, the game could be loaded in Spanish (my console was on that language). The texts and subtitles were in perfect castilian Spanish. So I am assuming that the rest of the languages were available as well.
So I am guessing that the disc is region locked, only to be displayed in english. But I can assure that Spanish is in it so...Should be the languages added to the database?