When you publish an Articulate Storyline course for CD and burn it to a CD or DVD, you may find that audio and video resources are slow to play. Due to this lag time, audio or video may even get truncated or cut off during playback.
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.