There are many different ways to add sound to your PowerPoint presentation. You can add sound effects to images, add sound icons you can click on or even just have your music play throughout the whole show. Your sound clips should be in either the wav or mid format. There are a few other less common file types you can use. You can also use a CD and play that while you are giving your presentation. To insert sound into your presentation follow these steps: Go to Insert on the menu bar and choose Movies and Sounds and then sound from gallery if you want to pick a sound file from Microsoft's Gallery or choose from file if you have a saved sound file you want to use. Find the sound file that you have access to and double click on it. A dialog box will open up and ask you if you want your sound to play throughout the whole show. Click Yes if you want it to play automatically and no if you do not. An icon will be inserted into your presentation. Get into Slide Show mode and your sound should automatically start if you choose that or click if you did not and your sound should play.