Wow, that's a new one on me XS-tech.! I need to go back and listen to my recordings. I stood through several cycles in the mural room and noticed it does seem to be short. As I recorded the entire attraction several times including Walt's Story (a time consuming thing because I had to edit three films to make one good one), I need to pay more attention to my entry into the theater so I can hear the longer version of the music! It could be possible because the music does end outside not long after everyone walks by and while the complete track is playing inside. If this is so, the illusion is good because the tracks are in sync, kind of like the dumbo music box in fantasyland that plays in sync with the recording of itself in fantasyland.