Incorporating an audio clip into your PowerPoint presentation can add impact to your message.  A 'talking head' is one example; a picture of someone that provides a testimonial for your product, or service.  Another example is to add narration for a 'product shot'.  The 'product shot' could be a cup of coffee, or a luxury automobile, but the narration delivers a memorable tag line.  It can also include familiar audio clues we are used to hearing on television ads like Intel Inside or Microsoft Windows.  I'll cover how to use an existing audio file for a 'talking head', and creating one for a 'product shot'.  

Once you have the picture for your 'talking head' placed on a slide where you want it, Insert/Movie and Sounds/Sounds from File.  From here you will need to navigate to where you saved your sound file and for these examples we are assuming it is a WAV file format.  Select the file and click OK.  You will be asked, "How do you want the sound to start in the slide show?"  Select, When Clicked.  A speaker icon will be placed on your slide and to launch the audio clip, just click it.

Creating your own audio narration to accompany your 'product shot' is just as easy.  Once you have the picture for your 'product shot' placed on a slide where you want it,  Insert/Movie and Sounds/Record Sound.  Name and record your narration, when you are satisfied with the result, click OK and a speaker icon will be placed on your slide.  As before, when your slide show is running just click the icon to launch the audio file.

Audio files are embedded by default, and become part of your PPT file. There is no worry about sending additional files, or tracking where they were created and stored.  Audio files can be large, so use discretion in how long your files play. And, check the file size of your PPT when you're finished.