thats what i was trying to say. they are no real rules, but ideas of how you should limit yourself.
it is widely known by now, and it was never intendent to be a law.
i'm not sure if it was van trier, but i think someone wanted a "confession" from korine, in which he describes in which way he "broke the rules".
for example; he connected a cd-player to the camcorder itself, and used music cd's that were only available at the house they shot. this was very uncommon in dogme films. he also said he tried to pregnant chloe sevigny for himself but it did not work out, so he had no choice but use a pillow.
just look up the credits to find out the songs you are looking for.