* Headless context will no longer initialize audio renderer

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@8315 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/core/com/jme3/app/Application.java

@@ -207,7 +207,7 @@ public class Application implements SystemListener {
     }
 
     private void initAudio(){
-        if (settings.getAudioRenderer() != null){
+        if (settings.getAudioRenderer() != null && context.getType() != Type.Headless){
             audioRenderer = JmeSystem.newAudioRenderer(settings);
             audioRenderer.initialize();
             AudioContext.setAudioRenderer(audioRenderer);