Slideshows are about more than just what you see. By adding audio like music, voiceover, or sound effects, you can use Microsoft PowerPoint to enhance your presentation or make it more useful to your ...

Dan was a writer on CNET's How-To and Thought Leadership teams. His byline has appeared in The New York Times, Newsweek, NBC News, Architectural Digest and elsewhere. He is a crossword junkie and is ...