Is there anyway to increase the volume of the voice commands ? I'm using the commercial version of MFN 15 for wince. When the navigator speaks the music volume lowers and the speach commands are heard but at lo volume. Is there anyway to increase this volume. The program is installed in a double din gps/car stereo. I tried increasing the volume of the wince device but at full volume it is still low to permit you to hear comfortably the voice commands over the road noise