I tried to look this up so sorry if it's been hashed out before. I use all three programs for various things. iPhoto get's my iphone videos, Aperture 3 has been getting my photos, videos since i've bought it, but iMovie has my older footage. Some questions I have: 1) Do I have a bunch of duplicate files or are these referenced somehwere? I know that iMovie has them in my ~user library, and iPhoto has them in the iPhoto library. So Aperture has them in its library? 2) Does iMovie then reference these other files? 3) My plan is to download all videos/photos to Aperture 3 going forwards. I'd like to have everything, the old and new stuff, in one place (preferably Aperture). Any thoughts on how to do this? 4) What I'd like to do with my video in the future is download in Aperture and apply metadata and then use iMovie or FCE in the future. Thanks in advance!