After a request on the forums, I've made a standalone level viewer. It's useful to see Armadillo Run levels on computers that don't have AR on them. It also can be used to generate thumbnail-sized pictures of levels.
To use: drag/drop files to the ARView window, or associate it with .lvl files and double-click on a file for it to be automatically loaded.
You can also invoke it on the commandline, arview <level file> [jpeg quality]
If you resize to the size you want and double-click on the image, it'll be saved as a jpeg in the same directory as the level, using the (optional) quality level specified on the command line.
Any comments or feedback, let me know.
You can download it here
Enjoy!