First things first: I got my new MBP and Aperture just few days ago and I haven't had much time to play with Aperture. And the fact that the manual is just in PDF-format has made it a bit difficult to learn the ins and outs of Aperture. That said, I have a question regarding offline-images and previews: In Aperture you can have hi-quality previews of images that are not actually available at that moment. They might be on DVD's, external hard-drives and so forth. Now, to my knowledge that work only with referenced images, and not with images that are in the Aperture Library itself, right? Now, what if I let Aperture handle the library-management for me, and I wanted to burn some of my images to DVD for archiving? How would that work? I looked around and I actually couldn't find a way to directly archive images inside Aperture. I can back them up to a Vault, but no DVD-archiving for example. Do I have do to that in Finder? And when I have done that, what would be the easiest way to turn those formerly Aperture-managed images in to referenced images that would reside on a DVD (for example) while still having their previews available? The reason I want to know this is that I'm worried for my hard-drive space. I do have external hard-drives available (they have my vaults at the moment), but I would like to have my images with me, without having to carry external hard-drives with me all the time. If I started to run out of space, I could always archive some images to DVD's, while retaining their previews. So, how do I do that?