title: How do I add an audio track to my "Play To" list using C# in Windows 7?
body: <p>I poked around for a while on Google and Windows Media player looking for a way to do this, but I can't and I think I should be able to, so I'm asking the fine people of StackOverflow.</p>
  
  <p>I'd like to be able to write some code to do one of the following:</p>
  
  <ol>
  <li>Add an audio file from my WMP media library to the current "Play To" playlist.</li>
  <li>Add an audio file from the file system to the current "Play To" playlist.</li>
  </ol>
  
  <p>It doesn't really matter to me which of these I use for my approach. Can anyone give me some direction? I'm guessing I'm going to have to dig into the Windows Media Player DLLs, but a starting point would be really helpful.</p>