It's not enough to place a mod's files in their own folder; you must also select the folder as the active mod. If you're using wxLaucher, you can do this by clicking the "Mods" tab, clicking the mod that you want (you may need to scroll through the list to see the mod), and then clicking "Activate."
For this mod, however, there are some things that you must do first (I'll assume you got it
here):
This mod is an example of how
not to package your mod: placing all of its loose files in one place rather than in their proper folders or, preferably, in VP files. Fortunately, the author was kind enough to include installation instructions in the readme file. Make sure you only follow the second set,
not the first set.
You might have noticed the lack of a mod.ini file. Unfortunately, wxLauncher doesn't let you select folders that lack this file, and even if it did, you would not get MediaVP enhancements. To fix this, first create a file called "mod.ini" in your mod's folder. (I advise you to make Windows Explorer show file extensions first; otherwise, you might end up creating something like "mod.ini.txt" instead, and that won't work. How exactly you do this depends on what version of Windows you have, so I suggest googling it.) Next, open your newly created mod.ini and add the following text:
[multimod]
secondarylist = mediavps_3612;
If you want to use a MediaVP version other than 3.6.12, change "mediavps_3612" to the folder where the desired MediaVPs are installed.