Hi all -
I'm teaching a German class at my job and am storing a series of PowerPoints on a google drive for my students. The audio (which I think worked previously before putting them on google drive) now says either "codec unavailable" or "media unavailable." My two goals are:

1. To have my students be able to download these from Google drive and listen to them. I.e., fix the broken audio tracks

2. Learn how to properly add sound to future PPTs I create to avoid this issue.

I'm attaching an example PPT I'm having trouble with.

https://drive.google.com/open?id=0B7...HhFWU0xeDl0Q28


Seth