The wind.wav only works when your planes over speeding.
So,take for instance if you are in a higher alt dive in your stuka,then youll hear the wave sound play,now because you changed the siren.wav into wind.wav the wind will sound like a siren..and therefor you will have what you want.
no one else will hear it,but you will..and only if you reach a fast dive speed.
tucking in at 150mph and droping the bomb wont cut it,gotta be a fast dive.
"Throws two cents"