Minim audio input

import ddf.minim.analysis.*;
import ddf.minim.*;
Minim minim;
AudioPlayer jingle;
FFT fft;
AudioInput in;

void setup()
{
  size(1280/2, 720/2, P3D);
  //size(displayWidth, displayHeight, P3D);
  minim = new Minim(this);
  in = minim.getLineIn(Minim.MONO);
  fft = new FFT(in.bufferSize(), in.sampleRate());

  frameRate(60);

  println("fft specSize: " + fft.specSize());
}

void draw()
{
  background(0);
  fft.forward(in.mix);
  boxesInBoxes();
}

void boxesInBoxes() {
  noFill();
  pushMatrix();
  translate(width/2, height/2);
  for (int i = 0; i < fft.specSize(); i++) {
    int boxMaxSize = 255;
    float percentOfSpectrum = (float)i / fft.specSize();
    rotateZ(PI*percentOfSpectrum / fft.specSize());
    stroke(255.0, 128, 255.0 * (1 - percentOfSpectrum), 128);
    box(boxMaxSize*((fft.getBand(i) + fft.getFreq(i))/20));
  }
  popMatrix();
}