I've been looking around for a way to add files to items by URL, and I haven't found anything, so I thought I'd ask. Basically, I'd like to be able to add items by URL in much the same way that they can be uploaded now. The Omeka use case that I'm working with now is mostly small scale student projects, and I want to encourage use of existing library-digitized images in the exhibits that they create. I feel like I must be missing something obvious, but I haven't found anything so far.
I noticed that some of the PHP functions underlying attaching items to files allow for URLs in addition to uploads, but I haven't found anything on the front end, and since it's more for convenience than anything, using CSVImport or the Dropbox plugin don't seem like suitable workarounds.
I'd appreciate any advice that you have.