That is our filter, used to determine fitness for duty in a submarine. If you can put up with that, then you get your dolphins...
But seriously, that is NOT a feature of the mod, by any stretch of the imagination. Do you have another install of the game you could test? Any other older games to check? What does youtube do if you play a video, such as:
???
What happens to the game if you back out of the FotRSU mod? Did you happen to try to play from an older "Save" game? If so, remove the mod, and clear your "My Documents / SH4" folder (or whatever you named it if using MultiSH4). Try to re-enable the mod, and see what it does. You'll have to re-set your video, sound, etc., settings in the game...
If all of that fails, what folder do you have SH4 installed in? Which version is it? What OS are you using? Have you used LAA on the SH4.exe file? Does your dog bite?