=== MainWindow.xaml ===

<Window x:Class="ResourcesTest.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:ResourcesTest"
        mc:Ignorable="d"
        Title="5 in a row" Height="450" Width="600">
    <Grid>
        <Image x:Name="image1" HorizontalAlignment="Left" Height="45" Margin="151,145,0,0" VerticalAlignment="Top" Width="45" Source="Resources/greendot.png"/>
        <Image x:Name="image2" HorizontalAlignment="Left" Height="45" Margin="213,145,0,0" VerticalAlignment="Top" Width="45" Source="Resources/greendot.png"/>
        <Image x:Name="image3" HorizontalAlignment="Left" Height="45" Margin="275,145,0,0" VerticalAlignment="Top" Width="45" Source="Resources/greendot.png"/>
        <Image x:Name="image4" HorizontalAlignment="Left" Height="45" Margin="338,145,0,0" VerticalAlignment="Top" Width="45" Source="Resources/greendot.png"/>
        <Image x:Name="image5" HorizontalAlignment="Left" Height="45" Margin="399,145,0,0" VerticalAlignment="Top" Width="45" Source="Resources/reddot.png"/>
        <Label x:Name="label" Content="If you get 5 dots in the same color, you've won." HorizontalAlignment="Left" Margin="170,73,0,0" VerticalAlignment="Top" Width="274"/>
        <Button x:Name="button" Content="Start Game" HorizontalAlignment="Left" Margin="235,279,0,0" VerticalAlignment="Top" Width="115" Click="Button_Click"/>
        <MediaElement x:Name="mediaElement1" HorizontalAlignment="Left" Height="60" Margin="399,279,0,0" VerticalAlignment="Top" Width="60" Source="Resources/bloop_x.wav"/>
        <MediaElement x:Name="mediaElement2" HorizontalAlignment="Left" Height="60" Margin="482,279,0,0" VerticalAlignment="Top" Width="60" Source="Resources/buzzer_x.wav"/>
        <Label x:Name="timerLabel" HorizontalAlignment="Left" Margin="40,288,0,0" VerticalAlignment="Top" Height="51" Width="168"/>
    </Grid>
</Window>


=== MainWindow.xaml.cs ===

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Media;

namespace ResourcesTest
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        DispatcherTimer dt = new DispatcherTimer();

        public MainWindow()
        {
            InitializeComponent();
            image1.Visibility = Visibility.Collapsed;
            image2.Visibility = Visibility.Collapsed;
            image3.Visibility = Visibility.Collapsed;
            image4.Visibility = Visibility.Collapsed;
            image5.Visibility = Visibility.Collapsed;
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            button.Visibility = Visibility.Hidden;
            test();
        }

       
        public void test()
        {
            //DispatcherTimer dt = new DispatcherTimer();
            //dt.Interval = TimeSpan.FromSeconds(2);
            dt.Interval = new TimeSpan(0, 0, 0, 2);
            dt.Tick += dt_Ticker;
            dt.Start();
        }

        private int increment = 0;

        private void dt_Ticker(object sender, EventArgs e)
        {
            increment++;
            //String num = increment.ToString();

            if (increment == 1)
            {
                image1.Visibility = Visibility.Visible;

                SoundPlayer sndPlayer = new SoundPlayer(ResourcesTest.Properties.Resources.bloop_x);
                sndPlayer.Play();
                //sndPlayer.Position = TimeSpan.Zero;
                //mediaElement1.Play();
                //mediaElement1.Position = TimeSpan.Zero;
            }

            if (increment == 2)
            {
                image2.Visibility = Visibility.Visible;

                SoundPlayer sndPlayer = new SoundPlayer(ResourcesTest.Properties.Resources.bloop_x);
                sndPlayer.Play();
                //mediaElement1.Play();
                //mediaElement1.Position = TimeSpan.Zero;
            }

            if (increment == 3)
            {
                image3.Visibility = Visibility.Visible;

                SoundPlayer sndPlayer = new SoundPlayer(ResourcesTest.Properties.Resources.bloop_x);
                sndPlayer.Play();
                //mediaElement1.Play();
                //mediaElement1.Position = TimeSpan.Zero;
            }

            if (increment == 4)
            {
                image4.Visibility = Visibility.Visible;

                SoundPlayer sndPlayer = new SoundPlayer(ResourcesTest.Properties.Resources.bloop_x);
                sndPlayer.Play();
                //mediaElement1.Play();
                //mediaElement1.Position = TimeSpan.Zero;
            }

            if (increment == 5)
            {
                image5.Visibility = Visibility.Visible;

                SoundPlayer sndPlayer = new SoundPlayer(ResourcesTest.Properties.Resources.buzzer_x);
                sndPlayer.Play();
                //mediaElement2.Play();
                //mediaElement2.Position = TimeSpan.Zero;
                dt.Stop();
            }

            //timerLabel.Content = "Round " + num;
        }
    }
}