Google Slides Autoplay Audio. Then, click the Video playback drop-down arrow and check "Autoplay when presenting". While it is a powerful tool, one of the biggest issues users might run into is that Google Slides does not support audio files.
The workaround, therefore, is simple - place the video file on a slide, make it invisible and turn on the auto-play mode.
The ability to add audio to Google Slides has been one of the most requested features for many years.
Google Sheets may not have support for audio files, but it works like a charm with Youtube or Google Drive. If you want to learn more about this panel, please refer to the How to Add a Video in Google Slides. Learn how to convert to Powerpoint from Google Slides and easily generate a file that you can share with people that use Microsoft's presentation software instead.