Although not official, I've been using avenard.org's packages for updated mplayer and nvidia driver packages without issue on my 9600GT:
http://www.avenard.org/files/ubuntu-repos/
Although not official, I've been using avenard.org's packages for updated mplayer and nvidia driver packages without issue on my 9600GT:
http:// www.avenard. org/files/ ubuntu- repos/