diff --git a/OpenRa.Game/Traits/CanPowerDown.cs b/OpenRa.Game/Traits/CanPowerDown.cs
index 0f19527739..a43a50f14b 100644
--- a/OpenRa.Game/Traits/CanPowerDown.cs
+++ b/OpenRa.Game/Traits/CanPowerDown.cs
@@ -34,7 +34,8 @@ namespace OpenRa.Traits
 			if (order.OrderString == "PowerDown")
 			{
 				IsDisabled = !IsDisabled;
-				Sound.Play((IsDisabled) ? "bleep12.aud" : "bleep11.aud");
+				if (self.Owner == self.World.LocalPlayer)
+					Sound.Play(IsDisabled ? "bleep12.aud" : "bleep11.aud");
 			}
 		}
 	}
diff --git a/OpenRa.Game/Traits/Production.cs b/OpenRa.Game/Traits/Production.cs
index 989f2ae1e3..bc4ffb004a 100755
--- a/OpenRa.Game/Traits/Production.cs
+++ b/OpenRa.Game/Traits/Production.cs
@@ -95,7 +95,9 @@ namespace OpenRa.Traits
 				}
 			}
 			isPrimary = true;
-			Sound.Play("pribldg1.aud");
+
+			if (self.Owner == self.World.LocalPlayer)
+				Sound.Play("pribldg1.aud");
 		}
 	}
 }
diff --git a/OpenRa.Game/Traits/RenderBuilding.cs b/OpenRa.Game/Traits/RenderBuilding.cs
index 1e0e41a5e7..4bbe74540d 100644
--- a/OpenRa.Game/Traits/RenderBuilding.cs
+++ b/OpenRa.Game/Traits/RenderBuilding.cs
@@ -95,7 +95,9 @@ namespace OpenRa.Traits
 		public void Selling( Actor self )
 		{
 			anim.PlayBackwardsThen( "make", null );
-			Sound.Play("cashturn.aud");
+
+			if (self.Owner == self.World.LocalPlayer)
+				Sound.Play("cashturn.aud");
 		}
 
 		public void Sold(Actor self) { DoBib(self, true); }
diff --git a/OpenRa.Game/Traits/SonarPulsePower.cs b/OpenRa.Game/Traits/SonarPulsePower.cs
index 7caa3fe088..899d138b87 100644
--- a/OpenRa.Game/Traits/SonarPulsePower.cs
+++ b/OpenRa.Game/Traits/SonarPulsePower.cs
@@ -10,21 +10,28 @@ namespace OpenRa.Traits
 		public override object Create(Actor self) { return new SonarPulsePower(self, this); }
 	}
 
-	public class SonarPulsePower : SupportPower
+	public class SonarPulsePower : SupportPower, IResolveOrder
 	{
 		public SonarPulsePower(Actor self, SonarPulsePowerInfo info) : base(self, info) { }
 
 		protected override void OnBeginCharging() { }
 		protected override void OnFinishCharging() { Sound.Play("pulse1.aud"); }
+
 		protected override void OnActivate()
 		{
-			// Question: Is this method synced? or does it have to go via an order?
-			
-			// TODO: Reveal submarines
-			
-			// Should this play for all players?
-			Sound.Play("sonpulse.aud");
-			FinishActivate();
+			Game.orderManager.IssueOrder(new Order("SonarPulse", Owner.PlayerActor));
+		}
+
+		public void ResolveOrder(Actor self, Order order)
+		{
+			if (order.OrderString == "SonarPulse")
+			{
+				// TODO: Reveal submarines
+
+				// Should this play for all players?
+				Sound.Play("sonpulse.aud");
+				FinishActivate();
+			}
 		}
 	}
 }