Prezi has added audio capabilities to its presentation platform and has surpassed the 20 million user mark, more than doubling its base in the past year. The new audio feature allows users to add ...

If you place an audio file onto a slide in Keynote, it will appear as a 53×53 pixel version of the OS X menu bar’s Sound icon. Assuming you don’t change the audio settings for the placed audio file, ...

There are other solutions for turning PowerPoint into movies or Flash files with narration, but they can get complicated and expensive. By far the easiest and most elegant way is to create a ...