I need to create a user interface for synchronization of photo albums in two systems (some website and facebook). Copying to each system should be optional, and there should be a possibility to update an album on the first or the other system if files or titles were modified.
I can think of having one list of mixed albums from both systems with icons identifying where they belong and actions like "export to facebook", "import from facebook", "update on facebook", or "update from facebook".
Or I could imagine having three lists and drag-n-drop functionality: albums on our system, synchronized albums, albums only on facebook.
Are there any existing examples for inspiration to complete this task? Any advice would be appreciated.