song = loadSound('wave.mp3');

}

​

function setup() {

  background(234);

  song.play();

}

​

function draw() {

  if (song.isPlaying()){

    print("song is playing");

  } else {

    print("song is not playing");

  }

}

​

function mouseClicked(){

  if (song.isPlaying()){

    song.stop();

  } else {

    song.play();

  }

}