Merge pull request #228 from multimentha/swap_chapter_20_audio

Swap out defunct mp3 samples for wav in chapter 20

Author: shiffman

chp20_sound/example_20_01_playback/data/beat.wav

@@ -11,7 +11,7 @@ SoundFile song;
 
 void setup() {
   size(480, 270);
-  song = new SoundFile(this, "beat.mp3");
+  song = new SoundFile(this, "beat.wav");
   song.play();
 }
 

chp20_sound/example_20_01_playback/example_20_01_playback.pde

@@ -13,7 +13,7 @@ void setup() {
   size(200, 200);
 
   // Load a sound file
-  song = new SoundFile(this, "beat.mp3");
+  song = new SoundFile(this, "beat.wav");
 
   // Loop the sound forever
   // (well, at least until stop() is called)

chp20_sound/example_20_03_manipulate_sound/data/beat.wav

@@ -4,7 +4,7 @@ SoundFile soundFile;
 
 void setup() {
   size(200, 200); 
-  soundFile = new SoundFile(this, "beat.mp3");
+  soundFile = new SoundFile(this, "beat.wav");
   soundFile.loop();
 }
 

chp20_sound/example_20_03_manipulate_sound/example_20_03_manipulate_sound.pde

@@ -13,7 +13,7 @@ void setup() {
   size(200, 200);
 
   // Load a sound file
-  song = new SoundFile(this, "beat.mp3");
+  song = new SoundFile(this, "beat.wav");
   song.loop();
 
   reverb = new Reverb(this);

chp20_sound/example_20_04_pan/data/beat.wav

@@ -14,7 +14,7 @@ Amplitude analyzer;
 
 void setup() {
   size(480, 270);
-  song = new SoundFile(this, "beat.mp3");
+  song = new SoundFile(this, "beat.wav");
   song.loop();
 
   // create a new Amplitude analyzer