14 track?
Well, that's just the first question.
Knottsberry Farm?
Here's an article from Electronics World 1967 that explains the whole thing.
http://www.mediafire.com/view/?8m5meciu63o9oz5In the early days of this forum, a member had some tapes he'd saved from Chuck E. Cheese Pizza Time Theater he was trying to play.
Looks like Nolan Bushnell wasn't the first time to use reel to reel in an amusement related application.