Moxie Manager is a file manager, to see what it offers visit http://www.moxiemanager.com/. It is a nice offer from Boonex to include Moxie Manager. I assume it is going to be integrated so that each user has their own separate directories for their files. Unless the server/site is set up to prevent hot-linking of images, then yes, you can stick an image tag on another site and and share that image. Videos will need an embed tag just like you need now.