Hello,
Since in Version 1.5 the URL upload feature is missing. I wrote a little plugin to get it back.
It works a little different than the original, because it was easier to code this way.
It's the first time I ever coded something for coppermine. The code is ugly and lacking some usual standards. E.g. everything is hardcoded in german.
So if you wish the contribute you are very welcome.
Thank you for your contribution. I just did a quick test and it worked as expected (at least if the source file is hosted on my localhost, but that's an issue with my testbed).