I received both the .ppsx files and the video files. If I ever needed to show them as intended, I would run both in separate windows, pause the video at the appropriate times, and switch over to the PowerPoint window. Since something went wrong with the linking/embedding of the videos in the .ppsx files, I think this is the only way you can show both, alternating between the two application windows.
I am looking forward to the priesthood leadership meeting in my next stake conference, because that is when my stake presidency wants to show these items to priesthood leaders. I am certain they haven't figured out the logistics of flipping between PowerPoint and Windows Media Player (or whatever). They are expecting the Stake Technology Specialist to just make that work. Unfortunately, they just released the STS (me), did not call a replacement, and I will be working at the temple that afternoon. I'm sure they will find someone to make it all work. If not, I already burned all the files to DVDs, one for each unit in the stake, so they can watch the videos later.
Dana Repouille, Plattsmouth, Nebraska