Finally getting back to this thread -- I had everything set pretty much the same as Noel shows when this was happening. Tried it again just now, and it's working the way it's supposed to. Only thing I can figure is that I set it to Part of a Song and then maybe a careless swipe of the mouse or something might have changed it to Whole Song. And then I neglected to recheck this setting. This isn't the way I normally do things, but what else could it have been?