This tool is a little pricy, but it’s worth it.
I’ve used these photoshop action script packages for years… and they work like crazy. If you are selling books, cd’s, dvd’s and bundles of those things, then I really, honestly recommend 3D Cover Actions.
Ignore the long, boring sales letter… skip straight to the buy link. If you use photoshop for anything, you’ll LOVE this. It will shorten your product marketing prep time by HOURS.