1. Presumably, hasagas g’vul, and if copying from an original CD, possibly geneivah depending on the terms of the original sale.
2. I don’t know. I think in most cases, the Jewish stations have links to buy the songs (or albums they’re from), so I’m guessing that it’s beneficial to the artists and producers even without direct financial compensation, and they are agreeable to that.
3. Whatever you hold about that, I’ll agree.
4. The latter is definitely false. the former depends on #1 and #3.
5. Too general. In fact, though, I was told that the venue actually has to compensate the copyright holder, but the performer doesn’t have to.