What a wonderful addition this is to my game! I had the base portal beacon signs already installed from a while back, but the CMI updated them and now they all can be read. I LOVE being able to hear the glowies much better. (I like the Glowie - Double Loud the best.) It has a sort of bell-like tone, and I no longer have trouble hearing or finding them. I also love the more realistic flight sound. It is great that you can try different things and then uninstall them if you don't like them. This is such a quality addition to our wonderful game.