Thanks for the input. I know it sounds like a strange feature, but it was positively an image preview -before- downloading. I believe the person hosting the file needed to have the feature enabled, because 7/10 files didn't support the preview. But some would, it would say "loading" in red, and then show a tiny image.

Anybody else out there know what program this was? I'm surprised its not more popular, the program had a ton of cool features like this.