title: FMOD channel setVolume doesn't work
body: <p>I use this:</p>
  
  <pre><code>err = channel-&gt;setVolume(someVolumeBetween0and1);
  </code></pre>
  
  <p>Even if err is FMOD_OK, the volume doesn't change. Am I doing something wrong? Is there any way to change the volume for a sound(channel)? Is there other range for volume instead of [0, 1]?</p>
  
  <p>Thanks!</p>
  
  <p>EDIT: I use setVolume just after this:</p>
  
  <pre><code>err = soundSystem-&gt;playSound(FMOD_CHANNEL_FREE, sound, false, &amp;channel);
  </code></pre>