Glitches in file uploaded to SharePoint server

I recently posted a published workshop on a Sharepoint Server, using the publish-to-player process and copying it to the server site for testing and review. There were several anomalies: For some people, the workshop ran perfectly. For others, especially those logging in remotely, there were all kinds of problems: The sound had bumps and skips in it, though the extent of the problem varied from person to person. Logging in from home, I found that none of the synching I'd put in worked: all the text and objects I'd timed-in came in at set intervals that had nothing to do with the settings I'd created (they did retain the right sequence of entry).

Does anyone know why this would happen and what can be done to prevent it?