This mod replaces the siren sound of special transports.
Attention! You must install this mod manually, because the installer cannot edit files with extension rpf
Files of this modification can be found in the folder "soundgvc", which is located in the folder with the files of the game (where the LaunchGTAIV.exe).
To install the update, you will need to program SparkIV.
Using the replace file SparkIV HORNS. ivaud this path pc\audio\Sfx\resident.rpf.