Google Slides now allows you to insert audio. The process is straightforward. You can audio files you have placed in your Google Drive to your existing Google Slides deck.
Check Out This Narrated Slide Show
Special thanks to Alfonso Mendoza, Jr. (@TechTeacher1381) for sharing his walkthrough of the process above.
The process is simple. Let's go over a few of the steps.
Step 1 - Get Audio and Put It in Drive
You can get audio from a variety of locations. Here are a few copyright-free/royalty-free websites. My favorite is TableTop Audio.
Explore this amazing list of websites where you can get copyright-free music.
Want to record audio? Lots of options are available there as well. While you could use Audacity Sound Editor/Recorder on Windows/Mac, you could choose to use a web-based audio recorder such as the ones below.
Put your MP3 formatted audio file in the appropriate space in Google Drive. For now, this is a required step. You are unable to upload audio files from your device.
When you have finished uploading it, it should appear in the list of files available to you.
To the left, you can see a screenshot of the audio files available in my Drive.
Step 3 - Listen to Audio
As you can see, the inserted audio appears as speaker file. You can add audio to every slide or loop for the presentation (sound track).