What's New in Wildfire 4 Document Document

When I open the document "What's New: Pro/ENGINEER Wildfire 4.0"; there are multimedia images and video links for most of the topics. My question is about the videos; I was able to view the video portion but I am wondering if there is an audio portion of these videos. If there is an audio what can be done to hear the audio. Otherwise I guess I simply want to know that no audio exists for these document links in this document.