diff --git a/README.md b/README.md
index 9478db1..58f57a4 100755
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ import soundtrack.optical.*;
 
 SoundtrackOptical soundtrack;
 
-String soundtrackFile = "./data/barking.wav";
+String soundtrackFile = "../../data/barking.wav";
 int dpi = 2400;
 float volume = 1.0;
 String type = "dual variable area";
@@ -30,7 +30,7 @@ String pitch = "long";
 boolean positive = true;
 
 void setup() {
-  size(213, 620);
+  size(213, 620, P2D);
   frameRate(24);
   soundtrack = new SoundtrackOptical(this, soundtrackFile, dpi, volume, type, pitch, positive);
 }