title: Error python when use playsound + os path
body: <p>i use this line for my game</p>
  <pre><code>playsound(os.path.join(os.path.dirname(__file__) , 'asset', C1 + '.mp3'))
  </code></pre>
  <p>it's work well on linux but on windows i get output:</p>
  <pre><code>raise PlaysoundException(exceptionMessage)
  playsound.PlaysoundException: 
      Error 275 for command:
          open &quot;E:\test\asset\sound3.mp3&quot; alias playsound_0.4871568054138944
      Cannot find the specified file.  Make sure the path and filename are correct
  </code></pre>
  <p>when i type full path</p>
  <pre><code>Error 277 for command:
          open &quot;E:\JPssetound3.mp3&quot; alias playsound_0.511238440569949
      A problem occurred in initializing MCI.
  </code></pre>