diff --git a/.gitignore b/.gitignore
index 1bc915c..3cbf0fa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -154,3 +154,4 @@ $RECYCLE.BIN/
 
 # Mac desktop service store files
 .DS_Store
+/VsDingExtensionProject/pingme.txt
diff --git a/VsDingExtensionProject/VsDingExtensionProjectPackage.cs b/VsDingExtensionProject/VsDingExtensionProjectPackage.cs
index b4ea923..cb0e258 100644
--- a/VsDingExtensionProject/VsDingExtensionProjectPackage.cs
+++ b/VsDingExtensionProject/VsDingExtensionProjectPackage.cs
@@ -21,7 +21,7 @@
     [Guid(GuidList.guidVsDingExtensionProjectPkgString)]
     [ProvideAutoLoad("{f1536ef8-92ec-443c-9ed7-fdadf150da82}")]
     [ProvideOptionPage(typeof(OptionsDialog), "Ding", "Options", 0, 0, true)]
-    public sealed class VsDingExtensionProjectPackage : Package
+    public sealed class VsDingExtensionProjectPackage : Package, IDisposable
     {
         private DTE2 applicationObject;
         private AddIn addInInstance;
@@ -141,5 +141,23 @@
             return activeProcId == procId;            
         }
 
+        public void Dispose()
+        {
+            SafeDispose(this.debugSoundPlayer);
+            SafeDispose(this.buildCompleteSoundPlayer);
+            SafeDispose(this.testCompleteSoundPlayer);
+        }
+
+        private void SafeDispose(SoundPlayer soundPlayer)
+        {
+            try
+            {
+                soundPlayer.Dispose();
+            }
+            catch (Exception ex)
+            {
+                ActivityLog.LogError(this.GetType().FullName, "Error when disposing player: " + ex.Message);
+            }
+        }
     }
 }
diff --git a/VsDingExtensionProject/source.extension.vsixmanifest b/VsDingExtensionProject/source.extension.vsixmanifest
index 2c95e00..8430535 100644
--- a/VsDingExtensionProject/source.extension.vsixmanifest
+++ b/VsDingExtensionProject/source.extension.vsixmanifest
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PackageManifest Version="2.0.0" xmlns="http://schemas.microsoft.com/developer/vsx-schema/2011" xmlns:d="http://schemas.microsoft.com/developer/vsx-schema-design/2011">
   <Metadata>
-    <Identity Id="26ba08d0-0d25-4479-8684-3054dd122876" Version="1.3" Language="en-US" Publisher="Vitalii Ganzha" />
+    <Identity Id="26ba08d0-0d25-4479-8684-3054dd122876" Version="1.4" Language="en-US" Publisher="Vitalii Ganzha" />
     <DisplayName>Visual Studio Ding extension</DisplayName>
     <Description xml:space="preserve">This small extension will play notification sounds when following events occur:
 - Build Complete