How do I get my code to respond to music?

Hey everyone!

I need some help with this sketch/project I'm doing for class. Right now I am trying to get my lines to respond to sound, I want them to extend outward as the music plays. I am new to processing and would really appreciate the help, thanks.

If you need more info just ask.

Code:

import ddf.minim.*;

Minim minim; AudioPlayer player;

static final int numLines = 63; float z;

void setup() { minim = new Minim(this); player = minim.loadFile("generic song"); player.loop(); background(20); size(800, 800); } void draw() {

background(20); stroke(167); strokeWeight(5);

translate(width/2, height/2); for (int i = 0; i < numLines; i++) { line(x1(z + i), y1(z + i), x2(z + i), y2(z + i)); } z+= 0.05; }

float x1(float z) { return sin(z/10) * 100 + sin(z); }

float y1(float z) { return cos(z/10) * 100; }

float x2(float z) { return sin(z/10) * 200 + sin(z); }

float y2(float z) { return cos(z/10) * 200 + cos(z/12);