audio - processing, sound overlapping -

i have problems understand how play tracks 1 after other avoiding overlap effect. using minim library did not find way detect final moment of first sound start second one. can give me tips? sketch

import ddf.minim.*; minim minim; audioplayer player[]=new audioplayer[4]; string filenames[] = new string[]{"sound1.mp3", "sound2.mp3"};  void setup(){  minim = new minim(this);  for(int i=0;i<2;i++){    player[i] = minim.loadfile(filenames[i]);    player[i].play();    print(filenames);  } }  void draw(){}  void stop(){ for(int i=0;i<2;i++){    player[i].close();  }  minim.stop();  super.stop(); } 

you can poll player[i].isplaying() see if sound still playing before starting next one. in code, means keeping track of player active, , moving call .play() method draw().