diff --git a/EduNetworkBuilder/NB.cs b/EduNetworkBuilder/NB.cs
index 613aca6..19f7e2c 100644
--- a/EduNetworkBuilder/NB.cs
+++ b/EduNetworkBuilder/NB.cs
@@ -593,6 +593,9 @@ namespace EduNetworkBuilder
 
         public static void PlaySound(NBSoundType What)
         {
+            BuilderWindow BW = GetBuilderWin();
+            if (BW != null && BW.ProcessingInvisibleNet())
+                return; //Do not ding if we are doing invisible stuff
             SoundPlayer sndClick;
             switch (What)
             {