Laser Harp issue please help

Good Evening,

I was hoping you could help I am attempting to build a laser buzzer type harp with my Arduino I have followed a tutorial I found online however when it came to the programming I am experiencing an issue Error compiling

C:\Users\Scott\Documents\Arduino\libraries\Tone\Tone.cpp: In member function 'void Tone::begin(uint8_t)':

C:\Users\Scott\Documents\Arduino\libraries\Tone\Tone.cpp:121: error: 'bitWrite' was not declared in this scope

C:\Users\Scott\Documents\Arduino\libraries\Tone\Tone.cpp:123: error: 'digitalPinToPort' was not declared in this scope

C:\Users\Scott\Documents\Arduino\libraries\Tone\Tone.cpp:123: error: 'portOutputRegister' was not declared in this scope

C:\Users\Scott\Documents\Arduino\libraries\Tone\Tone.cpp:124: error: 'digitalPinToBitMask' was not declared in this scope

C:\Users\Scott\Documents\Arduino\libraries\Tone\Tone.cpp: In member function 'void Tone::play(uint16_t, uint32_t)':

C:\Users\Scott\Documents\Arduino\libraries\Tone\Tone.cpp:198: error: 'OUTPUT' was not declared in this scope

C:\Users\Scott\Documents\Arduino\libraries\Tone\Tone.cpp:198: error: 'pinMode' was not declared in this scope

C:\Users\Scott\Documents\Arduino\libraries\Tone\Tone.cpp:294: error: 'bitWrite' was not declared in this scope

C:\Users\Scott\Documents\Arduino\libraries\Tone\Tone.cpp: In member function 'void Tone::stop()':

C:\Users\Scott\Documents\Arduino\libraries\Tone\Tone.cpp:361: error: 'digitalWrite' was not declared in this scope

here is the tutorial I have followed: http://www.radioshack.com/graphics/uc/rsk/Support/ProductManuals/Laser_Harp_Online_Instructions.pdf

Here is the code:

#include <Tone.h>

const boolean DEBUG = false;

const int CALIBRATION_PIN = A5;

const int SPEAKER_PIN = 8;

const int SENSOR_COUNT = 3;

typedef struct

{

  int pin;

  int note;

} sensor_type;

sensor_type sensor[SENSOR_COUNT];

Tone notePlayer;

void setup(void)

{

  if (DEBUG) {

    Serial.begin(9600);

  }

  sensor[0].pin = A0; // analog input 0, etc...

  sensor[0].note = NOTE_G3;

  sensor[1].pin = A1;

  sensor[1].note = NOTE_D4;

  sensor[2].pin = A2;

  sensor[2].note = NOTE_A4;

  notePlayer.begin(SPEAKER_PIN);

}

void loop(void)

{

  int calibration = analogRead(CALIBRATION_PIN);

  if (DEBUG) {

    Serial.print("cal: ");

    Serial.print(calibration);

  }

  int activeSensor = -1;

  for (int p = 0 ; p < SENSOR_COUNT ; p++) {

    int sensor_value = analogRead(sensor[p].pin);

    if (DEBUG) {

      Serial.print("\tsensor ");

      Serial.print(p);

      Serial.print(": ");

      Serial.print(sensor_value);

    }

    if ( sensor_value < calibration ) {

      activeSensor = p;

      if (DEBUG) Serial.print("!"); // "!" indicates note being played

    }

  }

  if (DEBUG) Serial.println();

  if (activeSensor == -1) {

    notePlayer.stop();

  } else {

    notePlayer.play(sensor[activeSensor].note);

  }

  if (DEBUG) delay(1000);

}

I look forward to your reply thanks in advance!

Scott