diff --git a/example/src/ofApp.cpp b/example/src/ofApp.cpp
index c71f9fb..520b2a6 100755
--- a/example/src/ofApp.cpp
+++ b/example/src/ofApp.cpp
@@ -3,6 +3,9 @@
 void ofApp::setup() {
     ofBackground(0);
     
+    // Enable or disable audio for video sources globally
+    ofx::piMapper::VideoSource::enableAudio = true;
+    
     // Add our CustomSource to list of fbo sources of the piMapper
     // FBO sources should be added before piMapper.setup() so the
     // piMapper is able to load the source if it is assigned to
diff --git a/example/src/ofApp.h b/example/src/ofApp.h
index be19ff2..88f13c7 100755
--- a/example/src/ofApp.h
+++ b/example/src/ofApp.h
@@ -4,6 +4,7 @@
 #include "ofxPiMapper.h"
 #include "CustomSource.h"
 #include "CrossSource.h"
+#include "VideoSource.h"
 
 class ofApp : public ofBaseApp {
     public: