Various OpenGLUI changes:

runtime/embedders/openglui/common/sound_handler.h

Index: runtime/embedders/openglui/common/sound_handler.h
===================================================================
--- runtime/embedders/openglui/common/sound_handler.h	(revision 20570)
+++ runtime/embedders/openglui/common/sound_handler.h	(working copy)
@@ -45,10 +45,14 @@
     }
 
     virtual int32_t PlaySample(const char* path) {
-      return 0;
+      // Just do a load so we can get logging.
+      return (GetSample(path) == NULL) ? -1 : 0;
     }
 
     static SoundHandler* instance() {
+      if (instance_ == NULL) {
+        return new SoundHandler();
+      }
       return instance_;
     }