In this short video I demonstrate how to add background music to your PowerPoint presentations and play it on a continuous loop. In the video I also mention a great place to find free music to use in your presentations.
Applications for Education
Adding background music on a continuous loop can be a good way to enhance a little introductory presentation for the start of a class meeting. I'd put together a few slides that have things like the day's agenda and a "do now" activity for students then play it for students as they come into class.