Step 1: Navigate to your Deck and click the "Audio" tab on the top to get to your audio files.

Step 2: Click the "Upload Audio" button and a new box will appear. From there you can either select a saved file from your computer or just drag and drop the file into that box.

This will directly add the audio to your library to be able to use within your presentations and slides.

Step 1: Navigate to the Slide you wish to update the audio on.

Step 2: Click the "Slide" drop-down from the menu and then click "Slide Audio" which will bring up a new box that allows you to pick which audio to use.

Step 3: Select "Add Audio" from this new box and then find the audio you want to add.

You can also upload audio files straight from this menu as well.

Step 4: After adding the file to your slide, you will be brought back to the first menu. From here, you can adjust a few settings before saving the changes. The first option is "Autoplay" which determines if the audio plays automatically when navigating to that slide. The second option is the "Audio Header" which is the text that will appear on top of your recording.