Ziz said:

My thinking was that the visuals would look just like TOS up until the TMP theme kicks in, at which point the TMP title style takes over. We get thru the theme and credits, then do the TOS portion of the story patched together from the episodes, then dissolve to TMP time and get on with the film.

Of course, there's a lot of ways to do this. Again, my test was just to figure out how to get this alternate Shat audio back into the TOS theme without just lifting the TOS theme and speech from the series as is.

EDIT: Nevermind