[propbeanie]

There is a multitude of reasons to not have sound in the game, as well as in the mod. First is, which version of SH4 do you have? FotRSU requires SH4v1.5, aka: Gold Edition, or the older v1.x with the U-Boat Missions Add-On Pack, which is very difficult to find these days. It does not matter if you have a disk, or Steam, or UConnect, or Amazon, or whatever. It just has to have the German side available in it, not that you play the German side in Fall of the Rising Storm.

You also cannot install the game into the default "C:\Program Files (x86)\..." folder. Windows has incorporated all sorts of "protection" into its OS over the years. Since FotRSU uses JSGME to activate the mod, and neither SH4 nor JSGME are registered as proper Windows programs, and effort to alter the files in the folder will be rolled back to their previous stage, so you might end up with the picture files making it through, but you will not have any configuration changes make it. If this is you case, then you are best-off to uninstall the game, and then re-install it into a folder of your own making, such as "C:\Games\WhatEverName...", and Windows will let you activate mods with JSGME to your heart's content.

Another problem might be not emptying the Save folder for the game (C:\Users \UserName \Documents \SH4...") before playing the modded game. The game runs off of the information in that Save folder, and will not overwrite old files with new ones after you activate a mod. If you empty the folder, the game will recreate those files, and then you have a fully modded version. For this reason, you also cannot use old Saved games from other versions of FotRSU, nor from other mods or Stock.

There could be many other reasons, and if you want more help, post back with where you have your game installed, as well as other details mentioned above. You can also browse the Support folder included in the mod for several pdf files on installation, activation, and other aspects of the game.