Using the nspluginwrapper RPMs and the flash-plugin from RPMforge.
This is what I have done:
- install nspluginwrapper (viewer)
- install nspluginwrapper (plugin)
- install the flash-plugin: yum -y install flash-plugin or manually from the RPM
- run the following command as root: nspluginwrapper --install /usr/lib/mozilla/plugins/libflashplayer.so
- check the installation: in the firefox addressbar about:plugins or visit a site with flash ;)