Minim minim;
AudioPlayer song;
FFT fft;

float x, y, x2, y2;

void setup()
{
background(255);
size(1000, 1000);
minim = new Minim(this);

song = minim.loadFile("highplaces.mp3", 512);
song.loop();
// create an FFT object that has a time-domain buffer the same size as jingle's sample buffer
// note that this needs to be a power of two and that it means the size of the spectrum
// will be 512. see the online tutorial for more info.
fft = new FFT(song.bufferSize(), song.sampleRate());
x = width/2;
y = height/2;

}

void draw()
{

stroke(30,20);
strokeWeight(1);

// perform a forward FFT on the samples
fft.forward(song.mix);
for(int i = 0; i < 25; i++)
{
x2 = cos(fft.getBand(i)*8) * (fft.getBand(i)*3)/20.0 + x;
y2 = sin(fft.getBand(i)*8) * (fft.getBand(i)*3)/20.0 + y;
line(x2, y2, x, y);
x = x2;
y = y2;
}
fill(255);
}

void stop()
{
// always close Minim audio classes when you finish with them
song.close();
minim.stop();