Real media Splitter
available here

http://sourceforge.net/project/showfiles.php?group_id=82303&release_id=170410

allows you to demux realmedia and play in wmp etc or convert to other formats
quote from the author:
I wanted to have a better way playing back rm files under windows. The realmedia framework is quite poor compared to the possiblities of directshow, with which now every player can play realmedia and if you know how you can even transcode/transmux it into another encoding/container format.
forum discussion here:
http://www.hydrogenaudio.org/index.php?s=2e16cf2e135dfb2abbd17d2b83db47f6&showtopic=11174