RealPlayer plugin problem
 

I need the realplayer plugin to listen to some live football, and get the follwing error:

'audio/x-pn-realaudio' plugin required.

however, mozilla reports it's existance:

rpnp.so

File name: rpnp.so

MIME Type Description Suffixes Enabled
audio/x-pn-realaudio-plugin RealPlayer Plugin Metafile rpm Yes


What can the matter be?

/usr/local/mozilla/plugins # ls
. flashplayer.xpt libflashplayer.so mplayerplug-in.so rpnp.so
.. javaplugin_oji.so libnullplugin.so nppdf.so rvrend.so