title: Set source and play a single mp3 file on each button on windows phone 7
body: <p>i'm trying to make an application for windows phone 7.1 for schoool. I want to play a sound for each pressed button on my application (just like istantfun button for android) but i have some problem. If i declare on my xaml all the 120 Media Elements my applcation will play only 3/4 sound randomly. I want to make something like this:</p>
  
  <pre><code>private void button1_Click(object sender, RoutedEventArgs e)
      {
          prova.Source = new Uri("/mp3/call.mp3", UriKind.Relative);
          prova.Play();
      }
  </code></pre>
  
  <p>where prova is a single MediaElement declared on the first page of xaml file.
  How can i do? Thanks advice</p>