Add audio to almost any item you add to your Creation Canvas:
Select any asset on your canvas, such as stickers, animations, text, web images, or assessment items.
On the action panel located below the canvas, you'll see a button titled 'Audio'. Then, click on the red record button to start recording.
When you've finished recording, click on the Stop button, then on 'Upload'.
You'll now have the option to play your audio through clicking on the little triangle on the left, then either 'Remove' or 'Add' it to your canvas. You can also click on the three dots on the right to download your audio file.
In Preview Mode, you or others can now click on the play buttons to play your audio!