title: Is DirectSound and WinMM based on WASAPI?
body: <p>I saw in this <a href="http://www.csc.kth.se/utbildning/kth/kurser/DT2410/_notes/audio_f_software_arch.pdf" rel="nofollow">slides</a> that the winmm and directsound in vista is based on wasapi.</p>
  
  <p>Does it means that winmm and directsound actually do their work by calling the functions in WASAPI ?</p>
  
  <p>I fail to find this information after some google search and hope someone here will know.</p>