RealPlayer is not loaded on you Computer than you will need to down load
it. Below are the Download Instructions for RealPlayer Basic.
RealPlayer Basic is a free tool for listening to voice messages and other
RealAudio files (.ra or .rm).
For Windows (95/98/NT/2000), Macintosh, and Unix Systems (see site for
minimum system requirements).
To download this software, click
NOTE: When downloading this software, the free "Real Player 8 Basic"
is all that is required to hear these messages (link is found in the middle-left
of the page)