When I copy a folder from the SD card to the Media Drive, I get a “Copy Complete” dialog for EACH AND EVERY file in the folder. And, it appears EACH one of them needs to be acknowledged by tapping the “OK”. So, a DCIM folder with 100 photos becomes a pretty tedious transfer indeed!
After the latest iOS update, copying a folder from an SD card to the Media Player works as it should, showing only one “Copy Complete” dialog at the end of the process. This will be a very slick way of copying a whole DCIM folder from a camera SD card, thereby keeping such folders together and separate on the Media Player.