Larry, sometimes when you get these sort of problems, the answers can seem just as confusing. I've switched sounds on sequenced songs after I decided I didn't like the way it recorded, or for other reasons, but sometimes it takes a panel write and sometimes just a save will do the trick. Maybe being in expand mode makes a difference, I don't know. The main thing is to keep experimenting, keep notes on what you're doing, and after a while all this becomes second nature. It certainly helps to have someone like Alec around to make sense of the chaos, though, doesn't it?!!