How to install MultiMedia Edition on top of standard SparkyLinux edition?

[maddes]

How can someone add all the stuff from the MultiMedia Edition onto an already installed SparkyLinux installation?
So that all programs, games, settings and desktop links are present.

It's also interesting if someone wants to have a MultiMedia + GameOver edition.

P.S.:
This may look like a duplicate of my other thread, but it is not.

Differences:

• Extra line in /etc/apt/sources.list: deb http://www.deb-multimedia.org testing main non-free
  Suggestion: Use separate file /etc/apt/sources.list.d/deb-multimedia.list

[pavroo]

Somebody asked about that before.
I put gameover, multimedia nad rescue meta packages on my to do list, but haven't found time yet.