title: IDirectSoundBuffe Lock, why to pass 2 parts?
body: <p>On the lock method of IDirectSoundBuffer8 we're suppose to pass 2 parts and their respective sizes. What are those? The fist part is the start and the second part is the end of the lock? They have to do with the primary and secondary buffers? Stereo sound? I'm totally lost. </p>
  
  <p>Can someone help?</p>