Congratulations, it's a nice gallery.
I agree with the suggestions of the last comment.
I want to suggest a very useful improvement. It's very good to be able to chose a number limit of icons. But what happens if my playlist have, i.e., 100 videos? The ones out of my page (and I think there is a limit of 50) never could be shown.
What I suggest is a new option to add some pagination: If my limit is 12 icons, I see them on the page, and beneath it I find pagination links to see next videos or jump to a page.