Ez a leghasznosabb info:
https://www.youtube.com/watch?v=SwK10iymrTE

a lenyege:
-a jatek fokonyvtaraban levo Config.xml -t kinyitni (jo lenne elotte csinalni rola biztonsagi masolatot)
-es ezt a reszt:
/>
<MediaPath Path="Media.zip" />

atirni ilyenre (koze tenni egy sort)
/>
<MediaPath Path="Media" />
<MediaPath Path="Media.zip" />

-csinalni a jatek fokonyvtaraba egy Media konyvtarat
-valahova kibontani az uj auto zip csomagjat, es a exet- inditva meg valahova "instalani" (valojaban csak meg jobban kibontja).
-ott ahova kibontodott, belemenni egesz az ottani Media konyvtarba, es a tartalmat atkopirozni a jatek fokonyvtaraban levo Media konyvtarba.



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vagy ez esetleg:
https://www.youtube.com/watch?v=BgibWlHIK6Q




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ez egy szoveg, de nem valami hasznos:
How to install Spintires: MudRunner mods?

Thinking about installing some new mods but still not sure how to install Spintires: MudRunner mods? Don’t worry! It is extremely easy, just follow these six steps and you are ready to play:

Method 1:
Download the Spintires mod you wish to add to the game and extract the mods file.
After doing that, find Steam folder in your computer and open it. Your steam folder could be, for instance: C:/Program Files/Steam
As you opened the Steam folder, go this way: steamapps/common/Spintires
Check for the file ‘media.zip’ in the Spintires folder and open it.
After you opened the ‘media.zip’ file, just drag and drop all files or folders which you extracted earlier to the right places.
That’s it! It is so simple to install and use Spintires mods! Give yourself a try and you will never regret it!

Method 2:
Download the mod
Unpack the file using a programme (WinRar, WinZip, 7zip and etc.), you can also right click -> Winrar/WinZip…-> Extract files -> Choose the destination -> Extract
Place the files inside the correct folder
ENJOY!