/// <summary>
/// Prechargement des fichiers son
/// </summary>
/// <param name="name"></param>
/// <param name="channelCount"></param>
/// <returns></returns>
private async Task PreloadSoundAsync(string name, int channelCount)
{
StorageFolder storageFolder = ApplicationData.Current.LocalFolder;
var folder = (StorageFolder)await storageFolder.TryGetItemAsync("Files");
var file = await folder.GetFileAsync(name);
await audioPlayer.AddSoundAsync(name, file, channelCount);
}