Code:
StartButton.addEventListener(MouseEvent.CLICK, StartGame);
//ContinueButton.addEventListener(MouseEvent.CLICK, ContinueGame);

function StartGame(event:MouseEvent):void

{

	var ChosenCards:Array = [AlfaPlay, AscariPlay, AstonOnePlay, AstonRapPlay, AudiPlay, BEngineeringPlay, BentleyPlay, BertonePlay, BristolPlay, BugattiPlay, ChevroletPlay, ChryslerPlay, DauerPlay, DevonPlay, DodgePlay, Ferrari458Play, FerrariEnzPlay, FiskerPlay, FordPlay, GilletPlay, GTAPlay, GumpertApoPlay, GumpertTorPlay, HennesseyPlay, JaguarXJ2Play, JaguarXKRPlay, JossPlay, KeplerPlay, KoenigseggAgePlay, KoenigseggCCXPlay, LamborghiniAvePlay, LamborghiniMurPlay, LanciaPlay, LexusPlay, LotecPlay, LotusPlay, MaseratiGraPlay, MaseratiMC1Play, McLarenF1Play, McLarenMP4Play, MercedesPlay, MoslerPlay, NissanPlay, NoblePlay, PaganiHuaPlay, PaganiZonPlay, Porsche918Play, PorscheCarPlay, RossionPlay, SaleenS5SPlay, SaleenS7Play, SpykerPlay, SSCPlay, SVSPlay, TeslaPlay, TVRPlay, UltimaPlay, VectorAvtPlay, WiesmannPlay, ZenvoPlay];
	
	var b:Array = ChosenCards.sort(CardShuffle); //Setting up an array to shuffle cards
		
		function CardShuffle(ChosenCards,b):Number {
			
			var num : Number = Math.round(Math.random()*2)-1;
		
			return num;
	}
	
	var PlayerCards:Array = []; //Sets up an array to hold the players cards.
	
	var AICards:Array = []; //Same as above but for the ai's cards
		
	for (var p:int = 0; p <60; p++) { //Select 30 of the cards available.
		
		var TargetHand:Array; //An array containing all cards.
		
		if (p % 2 == 0){ //Gives half of the cards to the player.
			
			TargetHand = PlayerCards;
			
			}else{ //and then give the other half to the ai.
				
			TargetHand = AICards;
			
		}
		
		TargetHand.push(ChosenCards[p]);
		
		}
	
	ContinueButton.visible = false;
	
		trace("Players 30 random cards\n");
		for(var s:int = 0; s < PlayerCards.length; s++)
		{
			trace((s + 1) + ". " + PlayerCards[s].name)
			//Problem could be from this piece of code.
		}
		
		trace("\nAI 30 random cards\n");
		for(var t:int = 0; t < AICards.length; t++)
		{
			trace((t + 1) + ". " + AICards[t].name)
			
		}
		
		function PickRandomCard(max:int):Number
		{
			
			var pick:Number = new Number(Math.round(Math.random() * max));
			
			return(pick);
			
		}
	
		var PickedPlayerCard:String = new String();
		var PickedAICard:String = new String();
		
		PickedPlayerCard = PlayerCards[PickRandomCard(15)].name;
		PickedAICard = AICards[PickRandomCard(15)].name;
		
		trace("\nPlayer First Card: " + PickedPlayerCard);
		trace("AI First Card: " + PickedAICard);
		
		this[PickedPlayerCard].visible = true; //Making chosen card visible.
		this[PickedPlayerCard].x = 75; //Positioning chosen card.
		this[PickedAICard].visible = true;
		this[PickedAICard].x = 430;
		
		StartButton.visible = false;
		BackButton.visible = false;
		
		SpeedButton.x = 99; //Setting position of card buttons so player can choose a value.
		ZerotoSixtyButton.x = 99;
		PowerButton.x = 99;
		WeightButton.x = 99;
		CostButton.x = 99;
		
		SpeedButton.buttonMode = true;
		ZerotoSixtyButton.buttonMode = true;
		PowerButton.buttonMode = true;
		WeightButton.buttonMode = true;
		CostButton.buttonMode = true;
		
		SpeedButton.visible = true;
		ZerotoSixtyButton.visible = true;
		PowerButton.visible = true;
		WeightButton.visible = true;
		CostButton.visible = true;
	
		SpeedButton.addEventListener(MouseEvent.CLICK, SelectSpeed); //Waits for chosen buttons to be pressed.
		ZerotoSixtyButton.addEventListener(MouseEvent.CLICK, SelectZerotoSixty);
		PowerButton.addEventListener(MouseEvent.CLICK, SelectPower);
		WeightButton.addEventListener(MouseEvent.CLICK, SelectWeight);
		CostButton.addEventListener(MouseEvent.CLICK, SelectCost);
		
		function SelectSpeed(event:MouseEvent):void //If this button is clicked.
	
		{
			if(this[PickedPlayerCard].visible){ //Checks if this is visible.
				
				if(this[PickedPlayerCard].Speed > this[PickedAICard].Speed) //Is this chosen value is larger and all of above is true ...
				
				{
					
					PlayerWinner.visible = true; //Do this.
					AILoser.visible = true;
			
					} else if (this[PickedPlayerCard].Speed < this[PickedAICard].Speed){ //If not and this is true do this.
				
					PlayerLoser.visible = true;
					AIWinner.visible = true;
					
					} else { //Else if neither are true do this.
						
					PlayerDraw.visible = true;
					AIDraw.visible = true;
					
				}
			}
		}
		
		function SelectZerotoSixty(event:MouseEvent):void
	
		{
			if(this[PickedPlayerCard].visible){
				
				if(this[PickedPlayerCard].ZerotoSixty < this[PickedAICard].ZerotoSixty) //Notice that this statement is the same as above except we're now asking if this this chosen value is smaller instead of larger.
				
				{
					
					PlayerWinner.visible = true;
					AILoser.visible = true;
			
					} else if (this[PickedPlayerCard].ZerotoSixty > this[PickedAICard].ZerotoSixty){
					PlayerLoser.visible = true;
					AIWinner.visible = true;
					
					} else {
						
					PlayerDraw.visible = true;
					AIDraw.visible = true;
					
				}
			}
		}
		
		function SelectPower(event:MouseEvent):void
	
		{
			if(this[PickedPlayerCard].visible){
				
				if(this[PickedPlayerCard].Power > this[PickedAICard].Power)
				
				{
					
					PlayerWinner.visible = true;
					AILoser.visible = true;
			
					} else if (this[PickedPlayerCard].Power < this[PickedAICard].Power){
				
					PlayerLoser.visible = true;
					AIWinner.visible = true;
					
					} else {
						
					PlayerDraw.visible = true;
					AIDraw.visible = true;
					
				}
			}
		}
		
		function SelectWeight(event:MouseEvent):void
	
		{
			if(this[PickedPlayerCard].visible){
				
				if(this[PickedPlayerCard].Weight < this[PickedAICard].Weight)
				
				{
					
					PlayerWinner.visible = true;
					AILoser.visible = true;
			
					} else if (this[PickedPlayerCard].Weight > this[PickedAICard].Weight){
					PlayerLoser.visible = true;
					AIWinner.visible = true;
					
					} else {
						
					PlayerDraw.visible = true;
					AIDraw.visible = true;
					
				}
			}
		}
		
		function SelectCost(event:MouseEvent):void
	
		{
			if(this[PickedPlayerCard].visible){
				
				if(this[PickedPlayerCard].Cost > this[PickedAICard].Cost)
				
				{
					
					PlayerWinner.visible = true;
					AILoser.visible = true;
			
					} else if (this[PickedPlayerCard].Cost < this[PickedAICard].Cost){
				
					PlayerLoser.visible = true;
					AIWinner.visible = true;
					
					} else {
						
					PlayerDraw.visible = true;
					AIDraw.visible = true;
				
					}
				}
		}
}
The code above is the fixed indentation code.

Code:
AlfaPlay.Speed = 181; //Sets values under the specified names to the following movie clips.
AlfaPlay.ZerotoSixty = 41;
AlfaPlay.Power = 450;
AlfaPlay.Weight = 1585;
AlfaPlay.Cost = 227000;

AscariPlay.Speed = 220;
AscariPlay.ZerotoSixty = 28;
AscariPlay.Power = 600;
AscariPlay.Weight = 1280;
AscariPlay.Cost = 600000;
All the cards are assigned values like the code above shows.