I guess you've all seen theme images that gets cropped like this in the Turtle skin:
Now, we've made a plugin for jAlbum 12.1 and onwards that helps you set the desired crop focus, so your theme images or folder thumbnails will look like this instead:
Get the plugin here, then right click an image or folder and select "Set crop focus" and take it from there.
Here's how the plugin looks in action. Just use the mouse to position the crop focus. Note: The plugin lets you preview the cropped region using a couple of sample shapes but it doesn't let you set the crop shape. This is usually controlled by the skin.
We encourage you who are Java developers to contribute with smart plugins for jAlbum. Our plugin API is documented here and you can get the full source for the CropFocus plugin at GoogleCode . CropFocus is licensed under the liberal Apache 2.0 license.