I was basing the "redistribution" on the idea that you can lend a book to someone. As long as only one person's reading the content at any time, it's not copying. Of course, there's *some* copying going when dealing with computers, but only internally. In any case, the fine points of the law in a case like this are out of our hands (and probably haven't even been tried in course). But as far as ethics go, I see no problems.