title: How to access kinect audio device using libfreenect correctly
body: <p>I use an Kinect, Model 1517, and cloned the master branch from the OpenKinect/libfreenect repo to my Ubuntu 14.04 LTS x64.
  My target is to do some fancy stuff with the build in mic-array.</p>
  
  <p>But if I want to test the sources and execute a sample program, I get following output :</p>
  
  <pre><code>$ ./freenect-glview 
  Kinect camera test
  Number of devices found: 1
  Could not open audio: -1
  Failed to open motor subddevice or it is not disabled.Failed to open audio subdevice or it is not disabled.Could not open device
  </code></pre>
  
  <p>During compilation no error or warning is pointed out. With debugging I isolated the failure to the initialization of FREENECT_DEVICE_MOTOR.</p>
  
  <p>I also tried to download the stable package version, using</p>
  
  <pre><code>$ sudo apt-get install freenect 
  </code></pre>
  
  <p>but (not in freenect-glview but in other samples) this error occurs too.</p>
  
  <p>What differs from all the tutorials and guides I read, is that after the command <code>$lsusb</code> the output just shows three devices named 'Microsoft Corp.', instead of a longer description like <code>Bus 001 Device 006: ID 045e:02ad Microsoft Corp. Xbox NUI Audio</code>.</p>
  
  <p>Do you have any plans, how I can fix this Problem? I assume, if it doesn't work in these samples, that it also wont work in an selfmade one.</p>