You may find that background audio (a playlist) in your Articulate Presenter course keeps playing when you click a player tab that opens an Articulate Engage interaction. The background audio should pause while the interaction is open, so it won't conflict with narration or videos in the interaction.
This issue was corrected in Update 2 for Presenter. To take advantage of the new features and fixes, download and install the latest version from the link in your product confirmation email, or get it here. Then republish your project.