Saw "The Dark Knight" yesterday in IMAX again. The first time I saw it the whole production was flawless. Yesterday, there were sections of the film where the audio seemed to dropout with loud stuttering/popping sounds most prominently in the surrounds. It didn't seem to be a speaker problem, but I've never experienced this before with digital sound in a theater. It was almost like the CD's were skipping. Does IMAX run sound seperately like DTS or is it included on the film strip? Anyone know what it could have been?