Yeah, that's what I've been hearing for the last couple of weeks - interactive sounds some devs call them. I, not being a game developer myself, thought guns and explosions would take the day, but not so apparently. I've got to loop the rest of the music on echobluemusic.com. Then my next task it to create a plethora of high quality interactive sound effects. I'll let everyone know when I have them up. Thanks for the suggestions and keep them coming!