You may find that audio or video on the base layer of an Articulate Storyline slide doesn't resume playing in HTML5 output when you:
- Use a layer to pause the timeline of the base layer.
- Close the layer and resume the base layer.
This issue was corrected in Update 3 for Storyline. To take advantage of the new features and fixes, download and install the latest version of Storyline from the link in your product confirmation email, or get it here. Then republish your Storyline project.