If you were connected to the Internet, there's a package called [tt]kubuntu-restricted-extras[/tt] that you can download. It's not really a package so much as it's just a list of other packages needing to be downloaded. You can go download those other packages and transfer them over via LAN or CD-RW or flash or other media of your choice, keeping in mind
that you'll most likely have to manually resolve dependency errors.
It looks like the list of packages you need to install to get the same thing is over here
. All of the packages should be available in the Ubuntu repositories ([tt]http://archive.ubuntu.com[/tt]). I'd personally recommend using Google SiteSearch to look for the packages (search for "package-name site:archive.ubuntu.com"). The files you want are branded with "i*86" somewhere in their filename, where * will be anything between 3 and 6, and end with the extension [tt].deb[/tt].
After you've got them copied over, open a superuser terminal and issue the command [tt]dpkg -i /path/to/deb_file.deb[/tt] for each of the packages you downloaded.
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