Works fine on a Mac.
I'd like a slideshow option if you can add one. It's a little annoying to have to move the cursor to get to the arrow when you switch from portrait to landscape.
Regarding the pics, they are very nice. If you don't mind a little criticism, I'll just make a few comments.
1. On the shots of your kids, the ones taken outdoors have some washout of the skin tones. I'm not sure how to fix that, it may be something for post proecessing.
2. On the Disney shots, you have great ideas. One thing I might change is to try to crop out the distracting elements of the background. For example, in the roller coaster shot, if you went a little to the right, and eliminated the track going into the mountain, I think the lines and shapes work a little better.
Overall, I really like your examples. Please don't construe my comments as negative, just what I see as opportunities for improvement.
Regards,
Boris