They never show up. I can even see the files "xintro.avi" and "xlogo1.avi" in the folder but they never get played.

Also, were there any other cinematics in the game? Or are the intro ones the only ones?

EDIT:
When I try to launch through Galaxy, I get a "Gog.com video player" window that is completely white and nothing happens. If I launch directly through exe, the game works but the cinematics don't play.