Generated file list image names look like:
http://i.imgur.com/NiNv2ca.jpg
or using the imgur site to display it:
http://imgur.com/NiNv2ca
The meme generator link looks like:
http://imgur.com/memegen/create/NiNv2ca
So convert the links from the image link generator to look like links from the meme generator with find/replace in a text editor.
Download your entire album so you have the same filenames as the ones stored in your album, and use those as thumbnails which you link to the meme generator link and use an Iframe to display it
Not the most efficient way, but in theory it should work.