SparkIV Link for 1.0.7.0: http://www.gtainside.com/en/download.php?do=comments&cat=326&id=28310
When you use SparkIV to replace your siren you have to go to, Audio, SFX, resident.rpf. When in Resident.RPF, Import HORNS.IVAUD in there and save.
Edit: Forgot to add if you installed the siren correctly, you shouldn't crash