Tutorial sections 2- & 3 aren't supposed to have audio objects

examples/Tutorial/Part_2_03_Samples/Part_2_03_Samples.ino

 #include "AudioSampleCashregister.h" // http://www.freesound.org/people/kiddpark/sounds/201159/
 #include <Bounce.h>
 
+
 ///////////////////////////////////
 // copy the Design Tool code here
 ///////////////////////////////////
 
 
 
+
+
 // Bounce objects to read pushbuttons 
 Bounce button0 = Bounce(0, 15);
 Bounce button1 = Bounce(1, 15);  // 15 ms debounce time

examples/Tutorial/Part_2_04_Microphone_Check/Part_2_04_Microphone_Check.ino

 // 
 // Part 2-1: Using the Microphone
 
+
 ///////////////////////////////////
 // copy the Design Tool code here
 ///////////////////////////////////
   sgtl5000_1.enable();
   sgtl5000_1.volume(0.5);
   sgtl5000_1.inputSelect(AUDIO_INPUT_MIC);
-  sgtl5000_1.micGain(40);
+  sgtl5000_1.micGain(32);
   delay(1000);
 }
 

examples/Tutorial/Part_2_06_Feedback_Delay/Part_2_06_Feedback_Delay.ino

 // 
 // Part 2-6: Feedback (Echo) Delay
 
+
+
 ///////////////////////////////////
 // copy the Design Tool code here
 ///////////////////////////////////

examples/Tutorial/Part_3_01_Peak_Detection/Part_3_01_Peak_Detection.ino

 // copy the Design Tool code here
 ///////////////////////////////////
 
-#include <Audio.h>
-#include <Wire.h>
-#include <SPI.h>
-#include <SD.h>
-#include <SerialFlash.h>
 
-// GUItool: begin automatically generated code
-AudioPlaySdWav           playSdWav1;     //xy=382,95
-AudioAnalyzePeak         peak2;          //xy=571,221
-AudioAnalyzePeak         peak1;          //xy=587,174
-AudioOutputI2S           i2s1;           //xy=648,111
-AudioConnection          patchCord1(playSdWav1, 0, i2s1, 0);
-AudioConnection          patchCord2(playSdWav1, 0, peak1, 0);
-AudioConnection          patchCord3(playSdWav1, 1, i2s1, 1);
-AudioConnection          patchCord4(playSdWav1, 1, peak2, 0);
-AudioControlSGTL5000     sgtl5000_1;     //xy=399,187
-// GUItool: end automatically generated code
 
 
 void setup() {

examples/Tutorial/Part_3_02_Fourier_Transform/Part_3_02_Fourier_Transform.ino

 Bounce button2 = Bounce(2, 15);
 
 
+
 ///////////////////////////////////
 // copy the Design Tool code here
 ///////////////////////////////////