I'm downloading your new version, but it's massive and will take over an hour (I'm about to go to sleep). I will look at it tomorrow if I have time. In the version you uploaded the other day, all I had to do to get the sound to work in game was change one thing - see screenshot below. I guess your game has changed quite a bit since then, but with your old version changing this last line made all the sounds, shooting explosions etc work.
<img src="http://www.masspanicmusic.com/construct/screenshot2.jpg" border="0" />