The problem may not be in your Realplayer. Are you certain you actually have
a valid right to play those files? I ask because it is possible that DRM is
blocking your Realplayer. Or perhaps they are in a folder to which you do
not have permission?
However, to get a complete answer you should look for a forum which supports
your Realplayer. I'd try their website.
This forum is dedicated to support of the MS Access database application.
The website is not entirely clear and may have misdirected you.
George