It seems we've chatted before... http://forums.tumult.com/t/mouseover-change-images/4187
The animations are not appearing consistently. I probably wouldn't use GIFs for the animations. I'd make them in Hype. Sure, it's more work. It's tedious. It might make the project larger. Yet, there's greater control and consistency.
Also, if you're not too far along in your project, it might be a good idea to consider creating your artwork in SVG format. That could dramatically reduce the size of your project, while making your artwork infinitely scalable. Vector graphics are sharp!
If you're going to release this project to multiple platforms, your project's size and ratio might be tough for mobile devices. It looks almost square. That's going to be tough to fit onto a 16:9 iPhone.