It is seeing that information from the Sony database. But I don't know of any way to copy that information off your Sony.
Yes, calibre can read it, it is
possible... but I don't think anyone actually wrote any sort of functionality to do so.
Adding books works on the actual files, not the Sony database.
The need to import metadata from that database was I guess never considered.
Hmm, perhaps it would be nice if it were possible to have calibre import books from Device view and use the metadata from that view -- it would make an intriguing
feature request.