* @return The specified array or null if it cannot.
	 */
	private byte[] getBytes(int numOfBytes){
		if(getTargetDataLine()!=null){
    		byte[] data = new byte[numOfBytes];
    		this.getTargetDataLine().read(data, 0, numOfBytes);
    		return data;
		}
		return null;//If data cannot be read, returns a null array.
	}