Bob, you are absolutely right about the title/author fields. I already sent them a message about it, but I'm not holding my breath...
I tested renaming the files. It works, and the file is still readable on all authorized devices, but it's more work than copying through the first reader to the second.
To rename them, I had to:
- make a copy in different location
- delete the title from the reader (after I made SURE I had another copy), otherwise there are two titles in the Reader software
- rename the title
- drag the renamed title back into the Reader software
All in all, probably easier to copy from my Reader device to my wife's Reader software, and transfer from her Reader software to her Reader device.
I know I created my own pain, but with purchases happening on two different PCs at around the same time, or at least overlapping before I get around to synching them up, sorting the directory with the odd file names doesn't give me enough info to do that efficiently. Oh well. I'll have to play around with my sync software (AllwaySync, a marvelous, free program) to see if it can help me out. Add that to my list...
I guess I'd just like Sony to let me do multiple book downloads (or re-downloads) through the Reader software - then I'd grin peacefully and go back to reading.

In the meantime, I'll simply live with it.