Playing wav files in a XAML/C# Windows Store App using SharpDX.

using System;
using System.Collections.Generic;
using SharpDX.IO;
using SharpDX.Multimedia;
using SharpDX.XAudio2;

namespace WavePlayerDX {
public class WavePlayer : IDisposable {
public bool IsSoundOn { get; set; }

private readonly XAudio2 xAudio;
readonly Dictionary<string, MyWave> sounds;

public WavePlayer() {
    xAudio = new XAudio2();
    xAudio.StartEngine();
    var masteringVoice = new MasteringVoice(xAudio);
    masteringVoice.SetVolume(1);
    sounds = new Dictionary<string, MyWave>();
}

// Reads a sound and puts it in the dictionary
        public void AddWave(string key, string filepath) {
    var wave = new MyWave();

    var nativeFileStream = new NativeFileStream(filepath, NativeFileMode.Open, NativeFileAccess.Read);
    var soundStream = new SoundStream(nativeFileStream);
    var buffer = new AudioBuffer { Stream = soundStream, AudioBytes = (int)soundStream.Length, Flags = BufferFlags.EndOfStream };

    wave.Buffer = buffer;
    wave.DecodedPacketsInfo = soundStream.DecodedPacketsInfo;
    wave.WaveFormat = soundStream.Format;

    sounds.Add(key, wave);
}

// Plays the sound
        public void PlayWave(string key) {
    if (!sounds.ContainsKey(key)) return;
    var w = sounds[key];

    var sourceVoice = new SourceVoice(xAudio, w.WaveFormat);
    sourceVoice.SubmitSourceBuffer(w.Buffer, w.DecodedPacketsInfo);
    sourceVoice.Start();
}

public void Dispose() {
    xAudio.Dispose();
}
}

public class MyWave {
public AudioBuffer Buffer { get; set; }
public uint[] DecodedPacketsInfo { get; set; }
public WaveFormat WaveFormat { get; set; }
}
}

private WavePlayer _wavePlayer = new WavePlayer();

void MainPage_Loaded(object sender, RoutedEventArgs e) {
_wavePlayer.AddWave("spacy", "spacy.wav");
}

private void Button_Click_1(object sender, RoutedEventArgs e) {
_wavePlayer.PlayWave("spacy");
}