Video preview here
http://www.youtube.com/watch?v=CYV9Q9_WtF4

Important info:
- To install this sound mod you will need SparkIV
- Don't forget to back up your files

Features of this mod:
- New realistic thunder sounds
- Increased bass for thunder rumbling
- Louder rain impact sounds on vehicles and objects (plastic trash bags, umbrellas)

Installation:

1. Open SparkIV

2. Search then select Sfx

Find it here in SparkIV: (Grand Theft Auto IV -> pc -> audio -> Sfx)

3. Search then open resident.rpf

4. Search then select the .ivaud you want to replace

Example: (RAIN.ivaud)

5. Click import and replace the .ivaud file

6. Click save then close SparkIV

Now you're finished and ready to play!