If there is any chance you are going to share a presentation, create that presentation so that links to other files won't be lost when the file is shared.
The first step in preparing to share the presentation is to create a folder for all the presentation files, sound files, movies files and other linked files.
As you build the presentation, put a copy of each linked file into this directory and link to that copy. This will save you much heartache later on. (If you need a refresher on setting up links correctly, go back to Chapter 9 and review especially the information on Absolute vs. Relative links.)