--- a/QTfrontend/ui/page/pagemain.cpp	Sun Jan 15 23:54:06 2012 +0100
+++ b/QTfrontend/ui/page/pagemain.cpp	Mon Jan 16 00:03:13 2012 +0100
@@ -63,6 +63,9 @@
     BtnDataDownload->setWhatsThis(tr("Access the user created content downloadable from our website"));
     pageLayout->setAlignment(BtnDataDownload, Qt::AlignHCenter);
 
+    // disable exit button sound
+    btnBack->isSoundEnabled = false;
+
     return pageLayout;
 }