Ok, now we're gettin somewhere
Well.. Yes reverse engineering this,, decoding what ever you want to call it... I can see on a time line here that the 6 bit start section that is so prominent are 30mS apart... Thus means this common pulse is sent about 35 times a second which is about what the frame rate is of the amimatronic. And taking these FACTS -> 100 data bits sent every 35-40 times a second.. I don't see how it could send that much data that fast if this were sent as an audio file like you propose.
I mean,, if your telling me that it's impossible to record a digital bit stream onto a tape then please say so cause we can eliminate this idea, but I just really feel to get that much data out so fast here this must be the case??