Hello,
I have attempted to add a few custom sirens into the game, they are all signed 16 PCM mono Wave files. They will appear in the reconstructed .awc file and play correctly in OpenIV. When loading up GTA V and using ELS there are no siren sounds, and some audio including tire squeals are also muted. vehicles.awc is under 16mb. Deleting the resident.rpf in the mods folder makes the vanilla sirens function correctly.
I have restarted, and tried a variety of audio settings to make this function correctly with no success. I am pretty puzzled, any help?