Originally Posted by ereader22
Normally I would simply send them the basic (say epub or Mobi files) and they could ADD them to their Calibre. But, in that case, they would not have the metadata I d/l'd off the web.
Could be too much trouble with several hundred books, but it should work if you copy just the Calibre folder for every book. It has cover, metadata in opf file and formats. Of course both libraries MUST have EXACTLY the same structure, or some info in metadata will be lost. And I think first the .opf has to be added into Calibre and then formats and cover can be dragged into book details panel.