Audio Rate change

/**
  Sound Slider. P Rogers 11/01/2009 20.32
  Sketch that shows how to change the rate of a quicktime movie manipulate the
  speed of audio.
  Create a quicktime with audo only and place it in the data folder and rename  movieName to your filename
**/  

import processing.video.*;
Movie myMovie;
float movieSpeed = 0f;
float e = 0f;
String movieName = "tallis.mov";

void setup() {
    smooth();
    size(1024, 400);
    myMovie = new Movie(this, movieName);
    myMovie.speed(movieSpeed);
    myMovie.loop();
}

void draw() {
      drawInterface(); 
      movieSpeed = mouseX / 512f;
      //println(movieSpeed);
      myMovie.speed(movieSpeed);
 
}

void drawInterface(){
      background (255);
      stroke(0, 0, 0);
      strokeWeight(1);
      line(width / 2, 0, width / 2, height);
      stroke(255, 0, 0);
      strokeWeight(10);
      line(mouseX, 0,mouseX, height);
}