I see I skipped a couple of things; #20 actually I did, I tried to download my first video, although I had to wait for it. Then I forgot about it when I got the notice. I'll try again.
I've used the audio books & music before, and also e-print, for a library school class. It was handy because it was the only copy around, but inconvenient otherwise because it was on my work computer, and not very portable. Having such a thing on a PDA would probably be better.