MainActivity.javaactivity_main.xml
package com.codinginflow.soundpoolexample;

import android.media.AudioAttributes;
import android.media.AudioManager;
import android.media.SoundPool;
import android.os.Build;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends AppCompatActivity {
    private SoundPool soundPool;
    private int sound1, sound2, sound3, sound4, sound5, sound6;
    private int sound3StreamId;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            AudioAttributes audioAttributes = new AudioAttributes.Builder()
                    .setUsage(AudioAttributes.USAGE_ASSISTANCE_SONIFICATION)
                    .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
                    .build();

            soundPool = new SoundPool.Builder()
                    .setMaxStreams(6)
                    .setAudioAttributes(audioAttributes)
                    .build();
        } else {
            soundPool = new SoundPool(6, AudioManager.STREAM_MUSIC, 0);
        }

        sound1 = soundPool.load(this, R.raw.sound1, 1);
        sound2 = soundPool.load(this, R.raw.sound2, 1);
        sound3 = soundPool.load(this, R.raw.sound3, 1);
        sound4 = soundPool.load(this, R.raw.sound4, 1);
        sound5 = soundPool.load(this, R.raw.sound5, 1);
        sound6 = soundPool.load(this, R.raw.sound6, 1);
    }

    public void playSound(View v) {
        switch (v.getId()) {
            case R.id.button_sound1:
                soundPool.play(sound1, 1, 1, 0, 0, 1);
                //soundPool.pause(sound3StreamId);
                soundPool.autoPause();
                break;
            case R.id.button_sound2:
                soundPool.play(sound2, 1, 1, 0, 0, 1);
                break;
            case R.id.button_sound3:
                sound3StreamId = soundPool.play(sound3, 1, 1, 0, 0, 1);
                break;
            case R.id.button_sound4:
                soundPool.play(sound4, 1, 1, 0, 0, 1);
                break;
            case R.id.button_sound5:
                soundPool.play(sound5, 1, 1, 0, 0, 1);
                break;
            case R.id.button_sound6:
                soundPool.play(sound6, 1, 1, 0, 0, 1);
                break;
        }
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        soundPool.release();
        soundPool = null;
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical"
    tools:context="com.codinginflow.soundpoolexample.MainActivity">

    <Button
        android:id="@+id/button_sound1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="playSound"
        android:text="sound 1" />

    <Button
        android:id="@+id/button_sound2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="playSound"
        android:text="sound 2" />

    <Button
        android:id="@+id/button_sound3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="playSound"
        android:text="sound 3" />

    <Button
        android:id="@+id/button_sound4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="playSound"
        android:text="sound 4" />

    <Button
        android:id="@+id/button_sound5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="playSound"
        android:text="sound 5" />

    <Button
        android:id="@+id/button_sound6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="playSound"
        android:text="sound 6" />

</LinearLayout>