TurningPoint 5 is the software used with the audience response ("clickers") system in classrooms on the Anschutz Medical Campus.
Adobe Presenter, part of Adobe Acrobat Pro Extended Edition, converts Microsoft PowerPoint presentations to Flash format for posting on a web site so that a user can view the presentation without needing to own a copy of PowerPoint themselves.
When producing video or audio files for students remember they may not have access to every player feature that you have on your computer. For example, no Flash on iPads. There are some Windows media format that require students with Macintosh computers install plug-ins or applications (such as VLC). The reverse can occur with media prepared on a Macintosh for Windows PCs. A couple of useful links.
The second link provides some very useful information about file format compatibility for a variety of file formats.