Flight recorder 93

They are going to play the flight recorder from flight 93 today in the Moussaoui trial. It will be the first time this has been played in public. Will it be authentic? Will it shed any light on the events of 9/11? Is there a way to determine the authenticity? I know the movement has been waiting for something like this will it be advantageous?

It will only be advantageous if they have found the missing three minutes at the end. Without that crucial time, it doesn't matter much.