To avoid audio or video playback issues in Power Point, you can optimize media files you've inserted into your presentation for compatibility on other devices.For a list of supported file types, visit Video and audio file formats supported in Power Point.We are aware of the issue in Power Point 2010 and are investigating what we can do, but practically speaking, the most effective method of resolving this issue quickly is moving to a newer version of Office (2013 or 2016).
When the Optimize Compatibility button appears, it provides a summary of resolutions of potential playback issues.
In those early PCs AT keyboard controller was actually a sound chip, there was a driver for Windows 3.1 to use it as default sound device thru speaker connected to MB and used as POST sound device.
Only after few years came out outrageously priced Turtle Beach and others. I have a Jabra bluetooth speaker (the Solemate Mini).
If you're having trouble with audio or video in Power Point 2007, below are some things to check.
Before trying these, you may want to verify that your media file is on the list of Power Point compatible file formats.
Tip: Some older video file formats may not work properly in Office on a Windows RT PC.