title: genymotion does not make any sound
body: <p>there.
  I'm using Genymotion for test.
  I'm developing an android application.
  This application can make a sound.
  then 
  I tried to test my android application.
  But,it would not make a sound.</p>
  
  <p>My environment is Macbook.
  and
  Virtual box is 5.1.
  and
  VMDevice is Google Nexus 4 with API level 22.
  this would not make any sound even if i could change the volume of sound on genymotion.</p>
  
  <p><a href="https://i.stack.imgur.com/UqxMg.png" rel="noreferrer"><img src="https://i.stack.imgur.com/UqxMg.png" alt="enter image description here"></a></p>
  
  <p>And my virtual device setting is here.</p>