The flight recorder and the cockpit voice recorder, as well as some telephone conversations made via cell from the plane were taped. Anyone know if the filmmakers had access to these records, or if they had to rely on quizzing the family members and (possibly the) NTSB for whom the cockpit voice recording was played?

K. [and now the jury and courtroom filled with people at the Moussaoui trial have heard the cockpit recording, too. I wouldn't be surprised if a) it's not on the net, and b) if future similar recordings from plane crashes become public]