diff --git a/BUILD.md b/BUILD.md
index 878864da..b1513707 100644
--- a/BUILD.md
+++ b/BUILD.md
@@ -163,6 +163,7 @@ libstdc++-6.dll
 libwinpthread-1.dll
 Qt5Core.dll
 Qt5Gui.dll
+Qt5Multimedia.dll
 Qt5Network.dll
 Qt5Svg.dll
 Qt5Widgets.dll
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ddc0956e..263086b7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -133,6 +133,7 @@ find_package(Qt5Concurrent REQUIRED)
 find_package(Qt5Network REQUIRED)
 find_package(Qt5Test REQUIRED)
 find_package(Qt5Xml REQUIRED)
+find_package(Qt5Multimedia REQUIRED)
 
 # The Qt5 cmake files don't provide its install paths, so ask qmake.
 include(QMakeQuery)
diff --git a/launcher/CMakeLists.txt b/launcher/CMakeLists.txt
index c6204c09..e3dc0361 100644
--- a/launcher/CMakeLists.txt
+++ b/launcher/CMakeLists.txt
@@ -598,6 +598,7 @@ SET(LAUNCHER_SOURCES
     resources/iOS/iOS.qrc
     resources/flat/flat.qrc
     resources/documents/documents.qrc
+    resources/audio/audio.qrc
     ../${Launcher_Branding_LogoQRC}
 
     # Icons
@@ -902,6 +903,7 @@ qt5_add_resources(LAUNCHER_RESOURCES
     resources/iOS/iOS.qrc
     resources/flat/flat.qrc
     resources/documents/documents.qrc
+    resources/audio/audio.qrc
     ../${Launcher_Branding_LogoQRC}
 )
 
@@ -925,6 +927,7 @@ target_link_libraries(Launcher_logic
 )
 target_link_libraries(Launcher_logic
     Qt5::Core
+    Qt5::Multimedia
     Qt5::Xml
     Qt5::Network
     Qt5::Concurrent
diff --git a/launcher/main.cpp b/launcher/main.cpp
index aabb5a06..75e43759 100644
--- a/launcher/main.cpp
+++ b/launcher/main.cpp
@@ -49,6 +49,7 @@ int main(int argc, char *argv[])
         Q_INIT_RESOURCE(OSX);
         Q_INIT_RESOURCE(iOS);
         Q_INIT_RESOURCE(flat);
+        Q_INIT_RESOURCE(audio);
         return app.exec();
     }
     case Application::Failed:
diff --git a/launcher/resources/audio/audio.qrc b/launcher/resources/audio/audio.qrc
new file mode 100644
index 00000000..db3f9c59
--- /dev/null
+++ b/launcher/resources/audio/audio.qrc
@@ -0,0 +1,6 @@
+<!DOCTYPE RCC>
+<RCC version="1.0">
+    <qresource prefix="/audio">
+        <file alias="meow">meow.wav</file>
+    </qresource>
+</RCC>
diff --git a/launcher/resources/audio/meow.wav b/launcher/resources/audio/meow.wav
new file mode 100644
index 00000000..4d91dbcb
Binary files /dev/null and b/launcher/resources/audio/meow.wav differ
diff --git a/launcher/ui/MainWindow.cpp b/launcher/ui/MainWindow.cpp
index 0a747734..aeda9ed5 100644
--- a/launcher/ui/MainWindow.cpp
+++ b/launcher/ui/MainWindow.cpp
@@ -26,6 +26,8 @@
 #include <QtCore/QDir>
 #include <QtCore/QFileInfo>
 
+#include <QtMultimedia/QSound>
+
 #include <QtGui/QKeyEvent>
 
 #include <QtWidgets/QAction>
@@ -1359,6 +1361,10 @@ void MainWindow::onCatToggled(bool state)
 {
     setCatBackground(state);
     APPLICATION->settings()->set("TheCat", state);
+    if (state)
+    {
+        QSound::play(":/audio/meow");
+    }
 }
 
 namespace {
diff --git a/launcher/ui/dialogs/AboutDialog.cpp b/launcher/ui/dialogs/AboutDialog.cpp
index ae51809b..733e74f1 100644
--- a/launcher/ui/dialogs/AboutDialog.cpp
+++ b/launcher/ui/dialogs/AboutDialog.cpp
@@ -60,7 +60,8 @@ QString getCreditsHtml(QStringList patrons)
             stream << "<p>" << patron << "</p>\n";
         }
     }
-
+    stream << "<h3>" << QObject::tr("Assets", "About Credits") << "</h3>\n";
+    stream << "<p> Cat Meow.wav <a href='https://freesound.org/people/kklab5050/sounds/120017/'>by kklab5050 on freesound.org</a></p>\n";
     stream << "</center>\n";
     return output;
 }