Yeah, OGG is installed. Especially the third level of the blue theme is unfinishable.
I was even thinking it might have a collision bug or something as there seems to be a delay between visuals and collision that's messing up the collision prematurely, I can swear I did not touch the borders at least a good few times yet it still made it restart. Also, it's not very wide I guess, so it's very tricky (and for me still impossible to beat),
Cheers