diff --git a/car_start_run_stop_01.wav b/car_start_run_stop_01.wav
new file mode 100644
index 0000000..0af8bd5
Binary files /dev/null and b/car_start_run_stop_01.wav differ
diff --git a/input-selection-4.html b/input-selection-4.html
index 7598ab8..5bb8144 100644
--- a/input-selection-4.html
+++ b/input-selection-4.html
@@ -86,7 +86,7 @@
       }
 
       let banjoBuffer;
-      const URL = 'banjo_haptic.mp3';
+      const URL = 'car_start_run_stop_01.wav';
       const context = new AudioContext({'sampleRate': 8000});
 
       window.fetch(URL)