Hello Albert: I don't like to admit my age, but I started listening to NLS books and RFB&D books when you got them on disk and used the record players to read the books. One nice thing about the adapted record players was you could play regular records on them. So the NLS record player played a lot of music for me, as well as, played my books. Then RFB&D distributed books on open reel tape and you had to have a tape player that could read them. Mine was a Sony reel to reel tape player. I loved it when cassette tapes came out. Now that I have my BookPort I scan a book a week which is not available from NLS. Using K1000 I can then download the book to BookPort. As I mentioned most of the books I read are not available from NLS. Without BookPort I would never be able to read these books so effectively and pleasantly. I don't like to read a the computer. I figure that I can wait and get on a waiting list for digital NLS books. Since I've gotten the BookPort 2 years ago, I haven't read a single NLS book. Jim Nuttall--Michigan