Reading several files using multiple audioplayers, minim library

Hello,

I am trying to read several files using multiple audioplayers with minim library.

There are 4 .wav files corresponding to a zone, when one plays the others stop.

I am stuck with the index and would very much appreciate some help.

Thanks a lot in advance !

best, laurent

import ddf.minim.*;

Minim minim;
String [] fileNames = {"MOUSE", "WORDS", "FLOW", "VORTEX"};
int numSounds = fileNames.length-1;
int Border = 50;
/**AudioPlayer sounds1;
 AudioPlayer sounds2;
 AudioPlayer sounds3;
 AudioPlayer sounds4;*/
AudioPlayer [] sounds = new AudioPlayer[numSounds];
int idx;

void setup () {
  size(1080, 1080, P2D);
  minim = new Minim (this);
  /*sounds1 = minim.loadFile("MOUSE.wav");
   sounds2 = minim.loadFile("WORDS.wav");
   sounds3 = minim.loadFile("FLOW.wav");
   sounds4 = minim.loadFile("VORTEX.wav");*/

    for (byte idx = 0; idx != numSounds;
sounds[idx] = minim.loadFile (fileNames [idx++] +".wav"));

}
void draw() {
  background (255);
  fill(255, 0, 0);
  rect(25, 25, 50, 50);

  fill(0, 0, 255);
  rect(125, 25, 50, 50);
}

void mouseMoved() {
  if (mouseX > Border && mouseX < 350) {
    sounds [(int)(idx)].play();

    println("sound0:"+sounds);
  } else if (mouseX < 750) {

  } else {
  }
  if (mouseX < Border && mouseX > height-Border) {
  }

}
    void stop() {
      for ( byte idx = 0; idx != numSounds; sounds[idx++].close() );
      minim.stop();
      super.stop();
    }