It download the .crx file from novell-moonlight-184.108.40.206-x86_64.crx and then went to
and drag and drop the file on the chrome windows opened in that address and the following message appear
Apps, extensions, and users scripts cannot be added from this website
with an "OK" button and nothing more.
I read something about "ExtensionInstallSources", but not know how configure it to install extensions from a local directory. Any idea? I'm on Ubuntu 12.04 64bit