First Click on the Insert Tab, then on the right side of the toolbar will be a speaker
Picture2.jpg
Picture2.jpg
with a drop down menu.
Picture1.jpg
Picture1.jpg
The drop down list will contain the options, Load from file, sound from clip organizer, CD Audio track, or simply Record your own. After choosing one of these options. For example From clip organizer, there will be an array of choices on the right hand side. You can scan through or put in an input search. After selecting your Audio you will be prompted to answer if the audio should be clicked to play or play automatically as the slide comes into fruition.
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parameter.jpg
Finally the final product, simply a blank slide with an icon. Hypothetically we will say this is a click to play Icon. Hiding it anywhere in your slide is easy.
screenshot.jpg
screenshot.jpg