Assuming you are running the latest Fedora, you can get the SRPM from the main Fedora Project servers: http://dl.fedoraproject.org/pub/fedora/linux/updates/16/SRPM...

There are source and binary packages for Fedora 15, 16, the upcoming 17, and rawhide. You can configure your yum to use dl.fedoraproject.org instead of a choosing a mirror to get the latest updates, if you want.