wget http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm rpm --checksig -v rpmfusion-free-release-stable.noarch.rpm if it's ok then install it with rpm -Uvh rpmfusion-free-release-stable.noarch.rpm or do that at once with &&
the first command get the rpm without installing the second check it and the third installs it but do you have the public keys ? and from where you are going to get them ? you will say from rpmfusion.org and here we go again
