You have a cite for this ? "Public showing" isn't having a friend or two over. That's private showing.
Nope. If I get a chance I'll do some searching. My understanding is based on reading the actual copyright notice and some trade articles and blogs from some years ago. I'm more than happy to be corrected if I'm wrong.
AFAIR, the typical copyright notice says you must not '
lend, copy, re-sell, diffuse...' which is where I got the 'lend to a friend bit' being illegal from. It makes as much sense as banning down/uploading as anyone who borrows it is less likely to buy it for themselves.
In terms of having friends over, I thought I recalled a legal discussion on a bit that went something like 'broadcast in public or in private' which led to an interpretation that came to some numbers (my vague memory says 9 - 10) that would be deemed acceptable. A stupidly strict interpretation of the copyright notice I once saw on a VHS tape would mean only the actual purchaser could watch it and members of his family would have to buy their own copies!
As per some earlier discussion, I believe it was once deemed illegal to copy a legally bought record, CD, DVD even for your own 'backup' purposes but wasn't there a recent interpretation ruling that concluded that that was acceptable 'fair use'. The actual notice still clearly says you can't do it though and I thought the RIAA had specifically said that having a license in one format did permit you to utilise the music (or whatever) in another format?
Interestingly, if I'm right that you can make copies for your own use, then what's the difference between converting your vinyl to CD / mp3 (a purpose for which the technology is specifically sold in eg PC World - although all you really need is a straight through cable to your soundcard input slot) and downloading the MP3s someone else has ripped? I believe one would be ok and the other still illegal and yet the only difference is the latter is slightly easier.
Part of the bizarre mess that is copyright of virtual media. I suspect we all, at least occasionally, breach copyright without realising it (lending to friends etc*) it's just that those breaches aren't chased by the authorities like downloading is.
*Isn't there some rule that if you record broadcast TV you must destroy the recording in 3 months or is that just an urban myth?