code: public void setOrientation (float ax, float ay, float az, float ux, float uy, float uz)
      {
          if (_ax != ax || _ay != ay || _az != az || _ux != ux || _uy != uy || _uz != uz) {
              _vbuf.put(_ax = ax).put(_ay = ay).put(_az = az);
              _vbuf.put(_ux = ux).put(_uy = uy).put(_uz = uz).rewind();
              AL10.alListener(AL10.AL_ORIENTATION, _vbuf);
          }
      }
docs: Sets the orientation of the listener in terms of an "at" (direction) and "up" vector.