A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Hi, I appreciate the effort you put into making it work.
As a simpler workaround, you can continue using one extended audio file so it plays through the entire slide without relying on looping. For a cleaner setup later, reinsert the audio as an MP3, set Start to Automatically, enable Loop until Stopped, remove any animation, and keep PowerPoint updated since this issue is addressed in newer builds.