About This File
Weather Sounds for the Mod Pack installer by Woppa
When you download this file - extract the weathersound.mdk file and put it into the folder you are using to store .mdk files.
Open the Mod Pack installer (assuming you have already installed it!) and choose this folder using the Directory button.
You can then select this mod from the drop down box (if you have chosen the correct folder) and install it.