Many people are having the same problem. In addition, if you try to use the links associated with the Help, they do not work also.

To correct the problem, load the latest Limewire in safe mode. When you reboot the system (XP Pro/Home) just as the system starts to go into Windows, hit the F8 key until the safe mode screen comes up.

Good luck. This should help you with being able to preview videos and music. Had the same problem on several computers and it fixed all of them.