private async void doneButton_Click(object sender, RoutedEventArgs e)
        {
            Playlist playlist = null;

            if (Mode == SaveMode.Existing)
            {
                playlist = playlistsList.SelectedItem as Playlist;
                playlist.Songs.AddRange(Songs);
            }
            else
            {
                DateTime now      = DateTime.Now;
                string   fileName = String.Format("{0}{1}{2}_{3}{4}{5}.xml", now.Year, now.Month, now.Day, now.Hour, now.Minute, now.Second);

                playlist = new Playlist(playlistName.Text, fileName, Songs);
            }

            bool result = await CustomPlaylistsHelper.SaveToPlaylist(playlist);

            if (result == true)
            {
                if (PageHelper.MainPage != null)
                {
                    PageHelper.MainPage.RemovePicker();
                }
            }
            else
            {
            }
        }
        private async void saveButton_Click(object sender, RoutedEventArgs e)
        {
            playlist.Songs = new List <string>();

            foreach (Song s in listOfSongs)
            {
                playlist.Songs.Add(s.SongURI);
            }

            bool result = await CustomPlaylistsHelper.SaveToPlaylist(playlist);

            if (result)
            {
                if (Frame.CanGoBack)
                {
                    Frame.GoBack();
                }
            }
            else
            {
            }
        }