I have read the forum and it seems that the only option for batch download is to transfer the files and initiate the check now buttom which creates the categories and files (same title as file name).
The extension is great but it would be great to have a way of importing many other parts such as different title, tags, desciption, etc. Maybe the best way is through a excel file import.
The second suggestion is for external file types, there could be an option that the external file can be automatically downloaded into the joomla server rather than reading the file always from external server.
Thanks, it is great extension.