lib.ck

public class Player {
  SinOsc s => dac;
  440 => s.freq;
  0.5 => s.gain;

  fun void play() {
    3::second => now;
  }
}

fun void playfn() {
  Player p;
  p.play();
}

song.ck

Machine.add("lib.ck");

Player player;
player.play();