problem with sounds game

hi , when i play the volume is not increase.pls help

here unity scripts cool and enjoy

/*…
Scripts Name : Layer0

…*/

private var character : Transform;

function Start()
{
character = GameObject.Find(“Duck”).transform;
}

function Update ()
{
if((character.position.x - transform.position.x) >3)
{
transform.position.x += 7;
}
}
/*…
Scripts Name : Layer1

…*/
var character : Transform;

function Start()
{
character = GameObject.Find(“Duck”).transform;
}

function Update ()
{
if((character.position.x - gameObject.transform.position.x) >5)
{
gameObject.transform.position.x += 8.8;
}
}
/*…
Scripts Name : Layer2

…*/
var character : Transform;

function Start()
{
character = GameObject.Find(“Duck”).transform;
}

function Update ()
{
if((character.position.x - gameObject.transform.position.x) >3)
{
gameObject.transform.position.x += 7;
}
}
/*…
Scripts Name : Layer3

…*/
var character : Transform;

function Start()
{
character = GameObject.Find(“Duck”).transform;
}

function Update ()
{
if((character.position.x - gameObject.transform.position.x) >10)
{
gameObject.transform.position.x += 17.5;
}
}
/*…
Scripts Name : Layer4

…*/
var character : Transform;

function Start()
{
character = GameObject.Find(“Duck”).transform;
}

function Update ()
{
if((character.position.x - gameObject.transform.position.x) >200)
{
gameObject.transform.position.x += 595;
}
}
/*…
Scripts Name : Layer5

…*/
var character : Transform;

function Start()
{
character = GameObject.Find(“Duck”).transform;
}

function Update ()
{
if((character.position.x - gameObject.transform.position.x) >20)
{
gameObject.transform.position.x += 35;
}
}

here solution code try it and enjoy
/*===========================================
Script Name : copter.js

=============================================*/

var count : int =0;

var dir : Vector3;
private var speed1 : float = 16.0f;
var speed : float = 5.0;

var bool:boolean = true;
static var isGrounded : boolean;

var GUI_Manager_ref : GUIManager;
var packed_sprite_ref : PackedSprite;

var isTouched : boolean;
private var calibrationMatrix : Matrix4x4;

/========function Start() Start here=======/

function Start()
{

if(GameObject.Find("Bg_Sound")  )
{
	Destroy(GameObject.Find("Bg_Sound"));
} 
else if(GameObject.Find("Bg_Sound(Clone)"))
{
	Destroy(GameObject.Find("Bg_Sound(Clone)"));
}
isTouched = true;

bool = true;

CalibrateAccelerometer();

}

/=========function Update() here==========/

function Update()
{
//rigidbody.AddForce(15,0,0);
/--------- Accelerometer class here -------------/

if(GUI_Manager_ref.isPauseClick)
{
	packed_sprite_ref.PauseAnim();
}
else
{
	packed_sprite_ref.UnpauseAnim();
}

var accelerator : Vector3 = Input.acceleration;
var fixedAcceleration : Vector3 = FixAcceleration (accelerator);

dir.y = fixedAcceleration.x;
if(dir.sqrMagnitude > 1)
{
	dir.Normalize();
}
dir *=Time.deltaTime;


if(transform.position.y > -9.5)
{
	transform.Translate(dir * speed1);
}
else
{
	transform.position.y = -9.4;
}
if(transform.position.y < 19.7)
{
	transform.Translate(dir * speed1);
	var this_tranform_rotation = transform.rotation.eulerAngles.z;
}
else
{
	transform.position.y = 19.6;
}

/--------- Touch class here -------------/

count = Input.touchCount;
	
if (count > 0) 
{
	isTouched =true;
	var touch: Touch = Input.touches[0];
	
   	if(touch.phase == TouchPhase.Began ) 
   	{
   		rigidbody.velocity.x = speed * 5;
   				
    }
    if (touch.phase == TouchPhase.Stationary)
    {
    	rigidbody.velocity.x = speed * 7;
    	
 	}
 	
 	if(touch.phase == TouchPhase.Ended)
 	{
 		isTouched = false;
 	}
 						
}  

}

function CalibrateAccelerometer ()
{
var accelerationSnapshot : Vector3 = Input.acceleration;
var rotateQuaternion : Quaternion = Quaternion.FromToRotation(new Vector3(0.0, 0.0, -1.0), accelerationSnapshot);
var matrix : Matrix4x4 = Matrix4x4.TRS(Vector3.zero, rotateQuaternion, new Vector3(1.0, 1.0, 1.0));
calibrationMatrix = matrix.inverse;
}

function FixAcceleration (accelerator : Vector3)
{
var fixedAcceleration : Vector3 = calibrationMatrix.MultiplyVector(accelerator);
return fixedAcceleration;
}

/*===========================================
Script Name : GameManager.js

=============================================*/

var run_Time_Objects : GameObject;
var i : int;
private var instantiate_position : Vector3;

private var copter_transform : Transform;

var loaded_level : int;
var random_range :int;

function Start()
{
AdvertisementHandler.DisableAds();
copter_transform =GameObject.Find(“Copter”).transform;
loaded_level =Application.loadedLevel;
// print(“bjsg” + loaded_level);
switch(loaded_level)
{
case 2 :
random_range = 8;
break;
case 3 :
random_range = 10;
break;
case 4 :
random_range = 11;
break;
case 5 :
random_range = 13;
break;
case 6 :
random_range = 15;
break;
case 7 :
random_range = 18;
break;

}

}

function Update ()
{
if((copter_transform.position.x-gameObject.transform.position.x) >1)
{
for(i=0 ; i< 7; i++)
{
var incremented_value : int;
if(i==0)
{
incremented_value = Random.Range(35,80);
}
else
{
incremented_value = Random.Range(0,80);
}

			if(incremented_value < 40)
			{
				incremented_value =42;
			}
			instantiate_position.x += incremented_value;
			
			instantiate_position.y = Random.Range(-10,20);
			instantiate_position.z = 0;
			Instantiate(run_Time_Objects[Random.Range(0,random_range)],instantiate_position,Quaternion.identity);
		}
		
		gameObject.transform.position.x = (instantiate_position.x+20);
		instantiate_position.x = gameObject.transform.position.x;
	}

}
/*===========================================
Script Name : GUIManager.js

=============================================*/
private var sound_manager_ref : SoundManager;
private var distance_Travelled : float;
private var last_Position:Vector3;

var copter_rigidbody_ref : Rigidbody;
var copter_distance : Transform;

var level_selection : LevelSelection;

var buttonClick : boolean ;
var isPauseClick :boolean;
var isClicked :boolean;
var next_levels : boolean;
var time_distance :boolean;

var loose_Message : boolean ;

var my_GuiStyle :GUIStyle;
var my_smallGuiStyle :GUIStyle;

var myFont : Font;
var my_smallFont : Font;
var my_smallFont2 : Font;

var pause_button : Texture2D;
var outer_bar : Texture2D;
var health_bar : Texture2D;

var distance_texture : Texture2D;
var distance_texture2 : Texture2D;
var box_texture : Texture2D;
var Loose_texture : Texture2D;
var Win_texture : Texture2D;
var time_texture : Texture2D;
var tryAgain_button :Texture2D;
var quit_button :Texture2D;
var resume_button : Texture2D;
var next_button : Texture2D;

var current_health : float;
var health_decrementer : float;

var sec : float ;
var total_live : float;

var int_sec : int;
var minutes :int ;
var seconds : String;
var time : String;
var score : int;

var isWin :boolean;
var isPausedClicked :boolean;
var loose_sound : boolean;
var win_sound : boolean;

var healthLife :boolean;

var level_Selected : int;

var sw :float ;
var sh :float ;
/========function Start() start here =========/

function Start()
{

win_sound= true;
loose_sound =true;
level_Selected = PlayerPrefs.GetInt("level_Selected");
sound_manager_ref = GameObject.Find("SoundManager").GetComponent("SoundManager");
Time.timeScale=1;
last_Position = copter_distance.position; 
sw = Screen.width;
sh= Screen.height;

if(sw<=480)
{
	my_GuiStyle.font = my_smallFont;
}
else if(sw<=800)
{
	my_GuiStyle.font = my_smallFont2;
}
else
{
	my_GuiStyle.font = myFont;
}	
distance_Travelled =0;
sec = 0;
minutes = 0;
score =0;
seconds = "";
total_live = sw/4;
current_health = total_live;
	
	if(level_Selected ==1)
	{
		health_decrementer = ((total_live)*.01)/50;
		
		if(sw <480)
		{	
			health_decrementer = ((total_live)*.01)/40;

// print(“”+Screen.width);
}
}
else
{
health_decrementer = ((total_live)*.01)/60;
}
}

function Update()
{
distance_Travelled = copter_distance.position.x- last_Position.x;

sec = sec + Time.deltaTime;
int_sec = sec;

if(int_sec < 10)
{
	seconds = "0" + int_sec;
}
else
{
	seconds = ""+int_sec;
}

if(int_sec > 59)
{
	minutes++;
	sec=0;
}
time = minutes + ":" + seconds;

}

/========function OnGUI() start here =========/

function OnGUI()
{

if(level_Selected ==1 && (Input.GetKeyDown(KeyCode.Escape)))
{
	Application.LoadLevel("1_LevelSelection");
}
if(level_Selected ==2 && (Input.GetKeyDown(KeyCode.Escape)))
{
	Application.LoadLevel("1_LevelSelection");
}
if(level_Selected ==3 && (Input.GetKeyDown(KeyCode.Escape)))
{
	Application.LoadLevel("1_LevelSelection");
}
if(level_Selected ==4 && (Input.GetKeyDown(KeyCode.Escape)))
{
	Application.LoadLevel("1_LevelSelection");
}
if(level_Selected ==5 && (Input.GetKeyDown(KeyCode.Escape)))
{
	Application.LoadLevel("1_LevelSelection");
}
if(level_Selected ==6 && (Input.GetKeyDown(KeyCode.Escape)))
{
	Application.LoadLevel("1_LevelSelection");
}

if(!time_distance)
{
	GUI.DrawTexture(Rect(sw/1.37,sh/15,sw/4.5,sh/15),distance_texture);
	GUI.Label(Rect(sw/1.14,sh/13,sw/1.1,sh/1.1), "" + Mathf.FloorToInt(distance_Travelled),my_GuiStyle);
	//GUI.Label(Rect(10,sh/8,sw/2.5,sh/1.5), "Score : " + score);
	GUI.DrawTexture(Rect(sw/8,sh/15,sw/4.5,sh/15),time_texture);
	GUI.Label(Rect(sw/4.63,sh/12.8,sw/2.5,sh/1.8), "" + time, my_GuiStyle);
	time_distance = false;
}
	
if (minutes == 2) 
{	
	if(win_sound)
	{
		sound_manager_ref.Play_Respective_Sound(4);		
		win_sound = false;
	}
	time_distance = true;
	Time.timeScale = 0;
	GUI.DrawTexture(Rect(sw/6,sh/8,sw/1.5,sh/1.3),box_texture);
	GUI.DrawTexture(Rect(sw/2.82,sh/4,sw/3.5,sh/10),Win_texture);
	isWin = true;
	
	switch(Application.loadedLevel)
	{
		case 2 :
					if(	PlayerPrefs.GetInt("no_of_level_unlocked")<2)
					{
				 		PlayerPrefs.SetInt("no_of_level_unlocked",2);
				 	}
				 	break;
		case 3 :
					if(	PlayerPrefs.GetInt("no_of_level_unlocked")<3)
					{
				 		PlayerPrefs.SetInt("no_of_level_unlocked",3);
					}
					break;
		case 4 :
					if(	PlayerPrefs.GetInt("no_of_level_unlocked")<4)
					{
				 		PlayerPrefs.SetInt("no_of_level_unlocked",4);
				 	}
				 	break;
		case 5 :
					if(	PlayerPrefs.GetInt("no_of_level_unlocked")<5)
					{
				 		PlayerPrefs.SetInt("no_of_level_unlocked",5);
				 	}
				 	break;
		case 6 :
					if(	PlayerPrefs.GetInt("no_of_level_unlocked")<6)
					{
			 			PlayerPrefs.SetInt("no_of_level_unlocked",6);
			 		}
			 		break;
	}
	
		print("===" +Application.loadedLevel);
		
		if(!(Application.loadedLevel == 7))
		{
			GUI.DrawTexture(Rect(sw/3.1,sh/2.4,sw/4,sh/13.5),distance_texture2);
			GUI.Label(Rect(sw/1.7,sh/2.3,sw/2.5,sh/1.1), "" + Mathf.FloorToInt(distance_Travelled),my_GuiStyle);
			GUI.DrawTexture(Rect(sw/3.4,sh/1.9,sw/6,sh/10),tryAgain_button);
			if(GUI.Button( Rect(sw/3.4,sh/1.9,sw/6,sh/10), "",GUIStyle.none)) 
			{
				isClicked = true;
				Application.LoadLevel(Application.loadedLevelName);
			}
			GUI.DrawTexture(Rect(sw/1.85,sh/1.9,sw/6,sh/10),next_button);
			if(GUI.Button( Rect(sw/1.85,sh/1.9,sw/6,sh/10), "",GUIStyle.none)) 
			{					
				PlayerPrefs.SetInt("level_Selected",Application.loadedLevel);;
			
				Application.LoadLevel(Application.loadedLevel + 1);
				isClicked = true;
			}
			GUI.DrawTexture(Rect(sw/2.4,sh/1.5,sw/6,sh/10),quit_button);
			if(GUI.Button(Rect(sw/2.4,sh/1.5,sw/6,sh/10),"",GUIStyle.none))
			{
				isClicked = true;
				Application.LoadLevel("0_MainMenu");
			}	
		}
		else
		{
			GUI.DrawTexture(Rect(sw/3.1,sh/2.4,sw/4,sh/13.5),distance_texture2);
			GUI.Label(Rect(sw/1.7,sh/2.3,sw/2.5,sh/1.1), "" + Mathf.FloorToInt(distance_Travelled),my_GuiStyle);
			GUI.DrawTexture(Rect(sw/3.25,sh/1.7,sw/6,sh/10),tryAgain_button);
			if(GUI.Button( Rect(sw/3.5,sh/1.7,sw/6,sh/10), "",GUIStyle.none)) 
			{
				isClicked = true;
				Application.LoadLevel(Application.loadedLevelName);
			}
			GUI.DrawTexture(Rect(sw/1.9,sh/1.7,sw/6,sh/10),quit_button);
			if(GUI.Button(Rect(sw/2,sh/1.7,sw/6,sh/10),"",GUIStyle.none))
			{
				isClicked = true;
				Application.LoadLevel("0_MainMenu");
			}	
		}

}
else  if(loose_Message && minutes != 2 )
{
	if(loose_sound)
	{			
		sound_manager_ref.Play_Respective_Sound(3);
		loose_sound = false;
	}
	time_distance = true;
	Time.timeScale = 0;
	GUI.DrawTexture(Rect(sw/6,sh/8,sw/1.5,sh/1.3),box_texture);
	GUI.DrawTexture(Rect(sw/2.82,sh/4,sw/3.5,sh/10),Loose_texture);
	
	GUI.DrawTexture(Rect(sw/3.1,sh/2.4,sw/4,sh/13.5),distance_texture2);
	GUI.Label(Rect(sw/1.7,sh/2.3,sw/2.5,sh/1.1), "" + Mathf.FloorToInt(distance_Travelled),my_GuiStyle);
	
	GUI.DrawTexture(Rect(sw/3.25,sh/1.7,sw/6,sh/10),tryAgain_button);
	if(GUI.Button( Rect(sw/3.5,sh/1.7,sw/6,sh/10), "",GUIStyle.none)) 
	{
		isClicked = true;
		Application.LoadLevel(Application.loadedLevelName);
	}
	GUI.DrawTexture(Rect(sw/1.9,sh/1.7,sw/6,sh/10),quit_button);
	if(GUI.Button( Rect(sw/2,sh/1.7,sw/6,sh/10), "",GUIStyle.none)) 
	{
		isClicked = true;
		Application.LoadLevel("0_MainMenu");
	}
}		
else  if(!isPauseClick)

{
GUI.DrawTexture(Rect(10,10,sw/14,sh/10),pause_button);
if(GUI.Button(Rect(10,10,sw/14,sh/10),“”,GUIStyle.none))
{
isPausedClicked = true;
isPauseClick = true;
Time.timeScale=0;
}
}
else
{
GUI.DrawTexture(Rect(sw/3,sh/6,sw/2.8,sh/1.5),box_texture);
GUI.DrawTexture(Rect(sw/2.42,sh/2.8,sw/5,sh/10),resume_button);
if(GUI.Button( Rect(sw/2.42,sh/2.8,sw/5,sh/10), “”,GUIStyle.none))
{
isPausedClicked = false;
isPauseClick = false;
Time.timeScale=1;
}
GUI.DrawTexture(Rect(sw/2.42,sh/1.8,sw/5,sh/10),quit_button);
if(GUI.Button( Rect(sw/2.42,sh/1.8,sw/5,sh/10), “”,GUIStyle.none))
{
Time.timeScale=1;
isPauseClick = false;
Application.LoadLevel(“0_MainMenu”);
}

}
if(current_health>1 && !isWin )
{
	if( !isPausedClicked)
	{
		current_health -= (health_decrementer);
	}
}
else 
{

	loose_Message = true;
	copter_rigidbody_ref.constraints = RigidbodyConstraints.FreezePositionX;
}
GUI.DrawTexture(Rect(sw/2.6,10,current_health,sh/20),health_bar);

GUI.DrawTexture(Rect(sw/2.62,10,(sw/3.9),sh/20.2),outer_bar);

}
/*===========================================
Script Name : healthbar.js

=============================================*/

var copter_rigidbody_ref : Rigidbody;

private var ref_3:healthbar;
private var GUI_Manager_ref : GUIManager;

var texture2:Texture2D;
var texture1:Texture2D;

var texture1MaxW:float;

var currentHelath:float;

/========function Start() Start here=======/

function Start()
{
currentHelath = 100;
texture1MaxW = texture1.width;
ref_3 = GameObject.Find(“HealthBar”).GetComponent(“healthbar”);
GUI_Manager_ref = GameObject.Find(“GUIManager”).GetComponent(“GUIManager”);
}
/=========function Update() here==========/

function Update ()
{
if(currentHelath>5)
currentHelath -= Time.deltaTime;
else
{
GUI_Manager_ref.loose_Message = true;
copter_rigidbody_ref.constraints = RigidbodyConstraints.FreezePositionX;

}

}
/========function OnGUI() start here =========/

function OnGUI()
{
var BarWidth : float = (currentHelath/100)*texture1MaxW;

var gap : int =20;

GUI.BeginGroup(Rect(Screen.width/1.5 - texture2.width - gap,gap,texture2.width,texture2.height));
	GUI.DrawTexture(Rect(0,0,texture2.width,texture2.height),texture2);

		GUI.BeginGroup(Rect(5,6,BarWidth,texture1.height));
		
			GUI.DrawTexture(Rect(-2,-7,texture1.width-5,texture1.height),texture1);

		GUI.EndGroup();

GUI.EndGroup();

}

var bg_texture : Texture2D;
var unlock_button : Texture2D;
var lock_button : Texture2D;
var back_button : Texture2D;
var loading : Texture2D;

var sw : float;
var sh : float;

var isLevelSelected : boolean;
var back_levels : boolean;

var no_of_level_unlocked : int;

var bg_sound : GameObject;

function Start()
{
sw = Screen.width;
sh = Screen.height;
if(!PlayerPrefs.HasKey(“no_of_level_unlocked”))
{
no_of_level_unlocked = 1;
}
else
{
no_of_level_unlocked = PlayerPrefs.GetInt(“no_of_level_unlocked”);

}

if(!GameObject.Find("Bg_Sound") && !GameObject.Find("Bg_Sound(Clone)"))
{
	Instantiate(bg_sound);
}

}
function OnGUI ()
{

	if(Input.GetKeyDown(KeyCode.Escape))
	{
		Application.LoadLevel("0_MainMenu");
	}

if(!isLevelSelected)
{
	GUI.DrawTexture(Rect(0,0,sw,sh),bg_texture);
	
	if(no_of_level_unlocked>=1)
	{
		GUI.DrawTexture(Rect(sw/4.7,sh/3,sw/8,sh/6),unlock_button[0]);
		if(GUI.Button(Rect(sw/4.7,sh/3,sw/8,sh/6),"",GUIStyle.none))
		{
			isLevelSelected =true;
			PlayerPrefs.SetInt("level_Selected",1);;
			Application.LoadLevel("2_GamePlay");
			back_levels =true;
		}
	}
	
	if(no_of_level_unlocked >=2)
	{
		GUI.DrawTexture(Rect(sw/2.2,sh/3,sw/8,sh/6),unlock_button[1]);
		if(GUI.Button(Rect(sw/2.2,sh/3,sw/8,sh/6),"",GUIStyle.none))
		{
			isLevelSelected =true;
			PlayerPrefs.SetInt("level_Selected",2);;
			Application.LoadLevel("3_GamePlay");
		}
	}
	else
	{
		GUI.DrawTexture(Rect(sw/2.2,sh/3,sw/8,sh/6),lock_button[1]);
	}
	
	if(no_of_level_unlocked >=3)
	{
		GUI.DrawTexture(Rect(sw/1.5,sh/3,sw/8,sh/6),unlock_button[2]);
		if(GUI.Button(Rect(sw/1.5,sh/3,sw/8,sh/6),"",GUIStyle.none))
		{
			isLevelSelected =true;
			PlayerPrefs.SetInt("level_Selected",2);;
			Application.LoadLevel("4_GamePlay");
		}
	}
	else
	{
		GUI.DrawTexture(Rect(sw/1.5,sh/3,sw/8,sh/6),lock_button[2]);
	}
	
	if(no_of_level_unlocked >=4)
	{
		GUI.DrawTexture(Rect(sw/4.7,sh/1.7,sw/8,sh/6),unlock_button[3]);
		if(GUI.Button(Rect(sw/4.7,sh/1.7,sw/8,sh/6),"",GUIStyle.none))
		{
			isLevelSelected =true;
			PlayerPrefs.SetInt("level_Selected",4);;
			Application.LoadLevel("5_GamePlay");
		}
	}
	else
	{
		GUI.DrawTexture(Rect(sw/4.7,sh/1.7,sw/8,sh/6),lock_button[3]);
	}
	
	if(no_of_level_unlocked >=5)
	{
		GUI.DrawTexture(Rect(sw/2.2,sh/1.7,sw/8,sh/6),unlock_button[4]);
		if(GUI.Button(Rect(sw/2.2,sh/1.7,sw/8,sh/6),"",GUIStyle.none))
		{
			isLevelSelected =true;
			PlayerPrefs.SetInt("level_Selected",5);;
			Application.LoadLevel("6_GamePlay");
		}
	}
	else
	{
		GUI.DrawTexture(Rect(sw/2.2,sh/1.7,sw/8,sh/6),lock_button[4]);
	}
	
	if(no_of_level_unlocked >=6)
	{
		GUI.DrawTexture(Rect(sw/1.5,sh/1.7,sw/8,sh/6),unlock_button[5]);
		if(GUI.Button(Rect(sw/1.5,sh/1.7,sw/8,sh/6),"",GUIStyle.none))
		{
			isLevelSelected =true;
			PlayerPrefs.SetInt("level_Selected",6);;
			Application.LoadLevel("7_GamePlay");
		}
	}
	else
	{
		GUI.DrawTexture(Rect(sw/1.5,sh/1.7,sw/8,sh/6),lock_button[5]);
	}
	
	GUI.DrawTexture(Rect(sw/2.4,sh/1.32,sw/6,sh/10.5),back_button);
	if(GUI.Button(Rect(sw/2.4,sh/1.32,sw/6,sh/11),"",GUIStyle.none))
	{
		
		Application.LoadLevel("0_MainMenu");
	}
}
else
{
	GUI.DrawTexture(Rect(0,0,sw,sh),loading);
}

if (Input.deviceOrientation == DeviceOrientation.LandscapeLeft)
{
	Screen.orientation = ScreenOrientation.LandscapeLeft;
}

else if (Input.deviceOrientation == DeviceOrientation.LandscapeRight)
{
	Screen.orientation = ScreenOrientation.LandscapeRight;
}

}
/
script Name : Menuscript
/

var bg_texure : Texture2D;
var credit_screen : Texture2D;
var settings_bg : Texture2D;

var back_button : Texture2D;
var play_button : Texture2D;
var instruction_button : Texture2D;
var instruction_bg : Texture2D;
var settings_button : Texture2D;
var credit_button : Texture2D;;
var plus : Texture2D;
var minus : Texture2D;

var sw : float;
var sh : float;
var volumebar : float;

var isMain_menu : boolean;
var isInstruction_screen : boolean;
var isCredit_Screen : boolean;
var isSetting_screen : boolean;

var mySkin : GUISkin;

var bg_sound : GameObject;

function Start()
{
sw = Screen.width;
sh = Screen.height;
isMain_menu = true;
isInstruction_screen = false;
isCredit_Screen = false;
isSetting_screen = false;
isCredit_Screen = false;
volumebar = 5;

if(!GameObject.Find("Bg_Sound") && !GameObject.Find("Bg_Sound(Clone)"))
{
	Instantiate(bg_sound);
}
AdvertisementHandler.Instantiate("a1507fc5754b5b0", AdvertisementHandler.AdvSize.BANNER, AdvertisementHandler.AdvOrientation.HORIZONTAL, AdvertisementHandler.Position.BOTTOM, AdvertisementHandler.Position.CENTER_HORIZONTAL, false, AdvertisementHandler.AnimationInType.SLIDE_IN_LEFT, AdvertisementHandler.AnimationOutType.FADE_OUT, AdvertisementHandler.LevelOfDebug.LOW);
AdvertisementHandler.EnableAds();

}

function OnGUI ()
{
if(Input.GetKeyDown(KeyCode.Escape))
{
isMain_menu = true;
isInstruction_screen = false;
isCredit_Screen = false;
isSetting_screen = false;
isCredit_Screen = false;
}
if(Input.GetKeyDown(KeyCode.Home))
{
Application.Quit();
}

if(isMain_menu)
{
	GUI.DrawTexture(Rect(0,0,sw,sh),bg_texure);
	GUI.DrawTexture(Rect(sw/2.6,sh/4.8,sw/4.5,sh/9),play_button);
	if(GUI.Button(Rect(sw/2.6,sh/4.8,sw/4.5,sh/9),"",GUIStyle.none))
	{
		Application.LoadLevel("1_LevelSelection");
	}
	
	GUI.DrawTexture(Rect(sw/2.6,sh/2.65,sw/4.5,sh/9),settings_button);
	if(GUI.Button(Rect(sw/2.6,sh/2.65,sw/4.5,sh/9),"",GUIStyle.none))
	{
		isMain_menu = false;
		isSetting_screen = true;
	}
	
	GUI.DrawTexture(Rect(sw/2.6,sh/1.85,sw/4.5,sh/9),instruction_button);
	if(GUI.Button(Rect(sw/2.6,sh/1.85,sw/4.5,sh/9),"",GUIStyle.none))
	{
		isMain_menu = false;
		isInstruction_screen = true;
	}
	
	GUI.DrawTexture(Rect(sw/2.6,sh/1.41,sw/4.5,sh/9),credit_button);
	if(GUI.Button(Rect(sw/2.6,sh/1.41,sw/4.5,sh/9),"",GUIStyle.none))
	{
		isMain_menu = false;
		isCredit_Screen = true;
	}
}
else if(isInstruction_screen)
{
	GUI.DrawTexture(Rect(0,0,sw,sh),instruction_bg);
	if(GUI.Button(Rect(0,0,sw,sh),"",GUIStyle.none))
	{
		isInstruction_screen = false;
		isMain_menu = true;
	}
}
else if(isSetting_screen)
{
	GUI.skin = mySkin;
	GUI.DrawTexture(Rect(0,0,sw,sh),settings_bg);
	
	volumebar = GUI.HorizontalSlider (new Rect (sw/2.8,sh/2.5,sw/4,sh/4), volumebar, 1.0f, 20.0f);
	GUI.DrawTexture(Rect(sw/3,sh/2,sw/30,sh/34),minus);
	if(GUI.RepeatButton(Rect(sw/3.1,sh/2.05,sw/20,sh/20),"",GUIStyle.none))
	{	
		volumebar -= .5;
	}
	GUI.DrawTexture(Rect(sw/1.67,sh/2,sw/30,sh/34),plus);
	if(GUI.RepeatButton(Rect(sw/1.7,sh/2.05,sw/20,sh/20),"",GUIStyle.none))
	{	
		volumebar += .5;
	}
	
	if(volumebar<=1)
	{
		AudioListener.volume = 0;
	}
	else
	{
		AudioListener.volume = volumebar;
	}

	GUI.DrawTexture(Rect(sw/2.4,sh/1.5,sw/8,sh/12),back_button);
	if(GUI.Button(Rect(sw/2.4,sh/1.5,sw/8,sh/12),"",GUIStyle.none))
	{
		isSetting_screen = false;
		isMain_menu = true;
	}
}
else if(isCredit_Screen)
{
	GUI.DrawTexture(Rect(0,0,sw,sh),credit_screen);
	if(GUI.Button(Rect(0,0,sw,sh),"",GUIStyle.none))
	{
		isCredit_Screen = false;
		isMain_menu = true;
	}
}

if (Input.deviceOrientation == DeviceOrientation.LandscapeLeft)
{
	Screen.orientation = ScreenOrientation.LandscapeLeft;
}

else if (Input.deviceOrientation == DeviceOrientation.LandscapeRight)
{
	Screen.orientation = ScreenOrientation.LandscapeRight;
}

}

/*===========================================
Script Name : HealthDecrese.js

=============================================*/

private var copters_gameObject_transform :Transform;
private var GUI_Manager_ref : GUIManager;
var packed_sprite_ref : PackedSprite;
private var sound_manager_ref : SoundManager;
/========function Start() Start here=======/

function Start()
{
copters_gameObject_transform = GameObject.Find(“Copter”).transform;
GUI_Manager_ref = GameObject.Find(“GUIManager”).GetComponent(“GUIManager”);
sound_manager_ref = GameObject.Find(“SoundManager”).GetComponent(“SoundManager”);
}
/=========function Update() here==========/

function Update ()
{
if(GUI_Manager_ref.isPauseClick)
{
packed_sprite_ref.PauseAnim();
}
else
{
packed_sprite_ref.UnpauseAnim();
}
if((copters_gameObject_transform.position.x-transform.position.x) >=150)
{
Destroy(gameObject);
}
}
/======function OnCollisionEnter()here======/

function OnTriggerEnter (colli : Collider)
{
if(colli.gameObject.tag == “copter”)
{
sound_manager_ref.Play_Respective_Sound(1);
iPhoneUtils.Vibrate();
if(GUI_Manager_ref.current_health >25)
{
GUI_Manager_ref.current_health -= 25;

	}	
	
	if(GUI_Manager_ref.current_health <25 && GUI_Manager_ref.current_health >11)
	{
		GUI_Manager_ref.current_health -= 10;
		
	}
	
	if(GUI_Manager_ref.current_health >1)
	{
		GUI_Manager_ref.current_health -= (GUI_Manager_ref.health_decrementer);
		
	}
	else
	{
		GUI_Manager_ref.loose_Message = true;
	}	
}

// print("Current health : "+ GUI_Manager_ref.current_health);
}

hi i am use this scripts for sounds,it work.

/*…
Scripts Name : Sound_Manager

…*/

var bg_music : AudioSource;
var gm_completion : AudioSource;
var gm_lose : AudioSource;
var coin_snd : AudioSource;
var boomerrang_audio : AudioSource;
var duck_slip_audio : AudioSource;

function Play_RespectiveSound(i : int)
{
switch(i)
{
case 0 :
if(!bg_music.isPlaying )
bg_music.Play();
break;

	case 1 : 
			if(!gm_completion.isPlaying)
			{
				gm_completion.Play();
			}
			break;
	case 2 :
			if(!gm_lose.isPlaying)
			{
				gm_lose.Play();
			}
			break;
	case 3:
			coin_snd.Play();
			break;
	case 4 : 
			boomerrang_audio.Play();
			break;
	case 5:
			duck_slip_audio.Play();
			break;
}

}

function Stop_respectiveSound(j:int)
{
switch(j)
{
case 0:
if(bg_music.isPlaying)
bg_music.Stop();
break;
}
}