I know that Alien Encounter went through a revision after it's opening in which the preshow was altered. Was the main show changed as well? The reason I ask is that I heard two versions of the audio that plays in the headrest speakers and they are totally different. It isn't as simple as a left and right channel recording. These are two distinct versions of this part of the soundtrack. I suspect that one may be an earlier version of the show or perhaps just a test recording. There is a time difference too. The first version runs 2:30 and the second is over 4 minutes. Can anyone tell me about the changes made to the main show?