import ddf.minim.*;

Minim minim;
AudioPlayer radio;

void setup() {
  size(512, 200, P3D);
  minim = new Minim(this);
  // load a URL
  radio = minim.loadFile("http://m1.liveatc.net/einn_high", 2048);
  // play the file
  radio.play();
}

void draw() {
  background(0);
  stroke(255);
  // draw the waveforms
  // the values returned by left.get() and right.get() will be between -1 and 1,
  // so we need to scale them up to see the waveform
  // note that if the file is MONO, left.get() and right.get() will return the same value
  for (int i = 0; i < radio.bufferSize ()-1; i++)
  {
    float x1 = map(i, 0, radio.bufferSize(), 0, width);
    float x2 = map(i+1, 0, radio.bufferSize(), 0, width);
    line(x1, 50 + radio.left.get(i)*50, x2, 50 + radio.left.get(i+1)*50);
    line(x1, 150 + radio.right.get(i)*50, x2, 150 + radio.right.get(i+1)*50);
  }
}

void stop() {
  radio.close();
  minim.stop();

  super.stop();
}