No source repositories for updates?

[Göran Uddeborg]

When I try to use "yumdownloader" to get a source package, it replies
with an error message:

    mimmi$ yumdownloader --source x264.x86_64
    Enabling updates-source repository
    Enabling rpmfusion-nonfree-source repository
    Enabling rpmfusion-free-updates-source repository
    Enabling fedora-source repository
    Enabling rpmfusion-free-source repository
    Enabling rpmfusion-nonfree-updates-source repository
    Cannot find a valid baseurl for repo: rpmfusion-free-updates-source/20/x86_64

Am I doing something wrong?  Or is it something on the repository side
that isn't ready yet?