cannot install rpm file

[kiki2009]

kindly help me, i have tried so many time to install the rpm it failed to install,

[root@localhost ~]# rpm -ivh http://rpm.livna.org/livna-release.rpm
Retrieving http://rpm.livna.org/livna-release.rpm
Preparing...                ########################################### [100%]
	package livna-release-1:1-1.noarch is already installed
[root@localhost ~]# rpm -ivh http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm
Retrieving http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm
curl: (6) Could not resolve host: download1.rpmfusion.org; Cannot allocate memory
error: skipping http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm - transfer failed
[root@localhost ~]# rpm -ivh http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm
Retrieving http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm
curl: (6) Could not resolve host: download1.rpmfusion.org; Cannot allocate memory
error: skipping http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm - transfer failed