Copy movie to external disk from library

Hi,

I would like to be able to copy movies from the library view to another source (an external HDD, in this case).
I know there is the filemanager, but it is FS based and is far less practical, as I have several sources and do not always know where the files are stored nor their name.

Ideally, I'm looking for an addon which would add a "Copy" contextual menu item to the library, with the choice of destination "source".

Does such an addon exists?

Thx