1. Install RealPlayer 10.
2. Copy nphelix.so to your Mozilla plugins directory and nphelix.xpt to your Mozilla components directory.
3. Make sure a symbolic link to the realplay script is in your PATH.
Note: If you installed the RealPlayer 10 RPM, these files are located in /usr/local/RealPlayer/mozilla.
Important! Installing RealPlayer 10 will not uninstall RealPlayer 8 if it is on your system. If you have both RealPlayer 8 and RealPlayer 10 on your system, remove the RealPlayer 8 browser plugin (rpnp.so) from your Mozilla plugins directory. You may experience problems using the RealPlayer plugin if you do not do this.
Download RealPlayer 10