Please, anyone can help me with it?
I have a couple of audience versions (stereo and mono)
but they don't match the speed of the video (both run slower).
Thanks in advance.
Audience recordings made on battery operated tape recorders are always subject to speed variation, particularly when played back on different decks.
What you really want is a transfer straight from the master reel.
(bumping into this thread) Yep it sure does. I heard few people claim that they heard HP 76 on radio around 1991 and even one guy long ago on one bootleged forum said he have Around 50 minutes taped from this broadcast so, not sure how valid his words was. Anyway there was HP 76 related broadcast not so long ago link
The "Wish you were there" episode used segments from the commonly available video mix, provided to the producers by Mr. Scully (if I recall correctly), there was nothing new there