You know I LOVE Williams' Superman theme music, that, and the Star Wars one, are the two greatest ever.
Having said that, the new Supes film should not feature it, that classic belongs ONLY to the Chris Reeve's films, and no one else's...I don't think Superman Returns should've used it, felt out of place to me.
That's the whole point of a reboot, be different.
They should follow Batman's lead...each version should have its own theme, Superman should be no exception.
That was a great fan made video though, I enjoyed it.