Firefox and RealPlayer
To get RealPlayer working with Firefox just load the plugin. The directory SUNWrealplayer is in is /usr/lib/RealPlay
# cd /opt/local/firefox/plugins
# ln -s /usr/lib/RealPlay/mozilla/nphelix.so
while you’re at it, link the java plugin too if its not already there:
# ln -s /usr/j2se/jre/plugin/i386/ns610/libjavaplugin_oji.so
restart Firefox and verify everything went smoothly by going to about:plugins