In my case i'm trying to control environment sound for player when he wears headphones.
Code to reproduce:
```
override void OnWasAttached( EntityAI parent, int slot_id )
{
if (GetGame().IsClient()) {
GetGame().GetWorld().SetExplicitVolumeFactor_EnvSounds2D(0.1, 1);
}
super.OnWasAttached( parent, slot_id );
}
```
just do it in 1000m radius to another player, or do it and then come to player. SetExplicitVolumeFactor_EnvSounds2D - will be applied to him also.