From briefly watching a gameplay clip (https://www.youtube.com/watch?v=xj8jbm5kXKw), it would appear that the music is indeed quite short and loops often - at least for the first music track in the game. I suppose whoever ripped it did not correctly configure it to have proper looping, but the music is there in full, otherwise. I guess that's some information for anyone else who might have been wondering the same.