Audio Won't Play On Powerpt 16 Animation

I'm using MS Office 2016 (PowerPoint). I've got a WAV file of writing on a chalkboard effect that I'm trying to use with a letter by letter animation. When I click on the audition button it plays fine, but when I audition the full animation which is a text box that writes out 4 lines I hear nothing.
HEP ME!

If this helps....I went back and moved the wav file that I'm trying to trigger into the Media folder where all of the other audio effects are, but that didn't help. However, whenever I pick the wav file I want, I hear the file that I had chosen before, the typewriter effect, barely audible. So, for some reason, it still sees that. I've already tried blowing away the entire animation and creating a new one, but I still hear the typewriter.

You guys are the only ones that can help me with this. PLEASE?