Music on a Slide
Add audio to a presentation
You can add .mp3 and .wav files stored in your Drive to a presentation.
Note: You can use .wav files from Chrome, Firefox, Safari, and Microsoft Edge.
On your computer, open a presentation in Google Slides.
Select the slide that you want to add the audio file to.
Click Insert Audio.
Choose an audio file and click select.
Not everyone will see the add audio option however. See the update.