MinimのSamplerクラスを使う

/**
* use Sampler
*
* @author aa_debdeb
* @date 2016/11/16
*/

import ddf.minim.spi.*;
import ddf.minim.signals.*;
import ddf.minim.*;
import ddf.minim.analysis.*;
import ddf.minim.ugens.*;
import ddf.minim.effects.*;

Minim minim;
AudioOutput out;

Sampler kick;
Sampler snare;
Sampler hihat;

void setup(){
  size(300, 200);
  minim = new Minim(this);
  out = minim.getLineOut();
  
  kick = new Sampler("kick.wav", 4, minim);  
  kick.patch(out);
  snare = new Sampler("snare.wav", 4, minim);
  snare.patch(out);
  hihat = new Sampler("hihat.wav", 4, minim);
  hihat.patch(out);
}

void draw(){

}

void keyPressed(){
  switch(key){
  case 'z':
    kick.trigger(); 
  case 'x':
    snare.trigger();
  case 'c':
    hihat.trigger(); 
  }
}