Yeah, when I ripped it from the PAL two-disc version, I had to go through some extra hoops (besides changing the speed of the RiffTrax) because mencoder kept ripping the "director's comments" version (which is apparently a shorter version of the director's cut) unless I explicitly told it to use the movie audio (-aid 128, if anyone's interested). Usually, I first rip the audio, mix that with the rifftrax, then mux the resulting audio mix with the DVD video as I rip it. In this case I had to rip the video and mux in the audio in separate stages. That done, though, I had no problems.