Install RPM Fusion in Fedora

Open your terminal and enter the Command

su

Now it will ask to enter password

Enter your password. (While entering your password nothing will be displayed so nothing to worry just type your password) and press Enter.

You will log in as root user

Now copy paste this command below and press Enter

su -c 'yum localinstall --nogpgcheck http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-18.noarch.rpm http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-18.noarch.rpm'

That's it rest will be done by the terimal.

Keep your PC/Laptop Connected to Internet during installation.