You can add audio (audio file) to your presentation by editing the section background. You can do this by uploading an audio file from your computer or saving an external asset. You can learn more about external assets here.
Detailed description:
After you hover over the particular section, buttons will appear in its upper right corner: „Delete,” „Duplicate,” „Copy,” and „Section Settings.” Clicking the „Section Settings” button will open the „Section Settings” section
Find „Background Audio” in the right toolbar at the very bottom
Click the „Add Media” button, and the „Media Library” will open
You can add an audio file as the background of your presentation in the following ways:
By selecting your previously uploaded files in the „Uploaded Assets” section of the „Media Library”
By selecting your previously uploaded files in the „External Assets” section of the „Media Library”
By uploading a new file from your computer in „Uploaded Assets” section of the „Media Library” – by clicking the „Add Asset+” button
By uploading a new file from your computer in „External Assets” section of the „Media Library” – by clicking the „Add External Asset+” button