You may find that audio is missing for a new slide that was created by copying and pasting an existing slide in this manner:
- Copy a slide that has audio.
- Close Storyline.
- Launch Storyline again and create a new project or open an existing project.
- Paste the slide into the new project.
To reuse one or more slides in different projects and retain audio, import the slides rather than copying and pasting them. To learn how to import slides from one Storyline project to another, click here.