Bernabby, the averaging is for your own score. In the current system, it's a (fallible) way of ensuring that you don't score everyone low to make your own entry do better. It wouldn't work in a ranking system, for obvious reasons.
However, in a ranking system, you could score the best song last (for example). That is why I suggest removing anonymity - if we have to go for ranking. Well now Ali, that's the beauty of ranking. Who is to say which is the best song? To each his own don't you think? You're not going to prevent the rascal from trying to sabotage votes no matter the scoring system that is used. I like to think those who participate in the contests and the voters have better things to do.
P.S. On another matter, I think the contest is only designed to give raw feedback in the form of a score. Any detail is what the crits fora are for.
Yes, and those who want crits usually post in the forums.