Well, so I installed and used xubuntu, but didn't like the desktop environment, so I installed the full kde,
which people said they liked. I liked it.

But then i munged the X11 and unmunged it, and things were still a little wierd, and I was running out of HD
space, so I got a new HD, external, loaded all my win7
data onto it, reduced the size of my win7 partition,
skrewed the partition table up, recovered it, put my
linux data on the external, and repartitioned again,
this time with a nice big partition for linux (19G)
and for linux data (200G), and installed kubuntu, since,
well I was using KDE under Ubuntu. Only it was
completely different. I had installed xubuntu because
I was told it had a nice small footprint for older
machines, and I was starting on a different (now
thrown out) machine -- now, trying to set things up
as they were, very hard, because there is no

Ubuntu Software Center

I couldn't get Chromium to work because no flash,
the Adobe site was a non-starter, the Ubuntu Forum
told some other poor bastard (I only searched for
answers already given) the label of rank newbie for
complaining of the error message (unknown 'trusty-
partner') and was told to download the flash plugin
in Ubuntu Software Center. Only, no USC.

Fortunately, asked and answered, just posting to vent,
popped open a root terminal and ran apt-get, which
had never heard of ubuntu-software-center, but would
download something called software-center, and lo and
behold on reboot, my USC was back, and I got flash
going.

Love the spirit of Linux, the freedom, the control.
Don't love the hours you have to spend setting it up.

Kubuntu has its own software center. If I recall it is under the system portion of the KDE menu.

Also, once you find the service center, Chromium needs pepper-flash player for flash videos. You will find it in the software center.

I have stopped using the software center after a year or so with Linux. (I was using Ubuntu, back then). It's so much slower than installing stuff from the command line, plus you can't depend on having it available when you switch to other distros (as you found out just now).
Using apt-get in the terminal will enable you to install software on any debian based system, even if it has no GUI at all. It takes a bit of time getting used to it, but once you get the hang of it you will find it to be a lot more efficient and, again, more distro-independent.

The last release of Kubuntu I installed (12.04) did not of course, use the Ubuntu software center. If you went to the KMenu on Kubuntu, Applications, System and then to Package Manager. For something used so frequently by many users, I would think they could have made it a little easier to find but that's their problem and their users I guess.

Look for muon software center. in terminal will tell you if it is installed or not.

Edit. Misread thread, never mind.