I don't really want to get this whole thing started here, CaptainLorax, but there's no way that it would make any difference. If burn in exists, which is somewhat questionable in itself, the difference between using these files and other files, white noise vs. pink noise, noise vs. music, playing softly vs. playing loudly... it doesn't matter.
If the specifics of burn in made THAT much of a difference, there would be warnings when they made headphones:
"Warning: using bass boost in the first 300 hours of using these headphones could result in a permanent loss of the headphone's ability to play bass."
My advice? Just listen to your headphones. That's why you bought them. If anything changes while you first listen to them, that's one aspect of the headphone purchase you can enjoy. If you do feel it necessary to burn them in, though, don't feel that you're going to do it wrong. It will turn out just fine.