I do #1 all the time. The Tesla interface doesn't support it very well, so what I do is add the album via the web interface and then can play it whenever I like through the favorites menu. I'm not sure what #2 means. I have a playlist that contains a single song and I can play it as often as I like, but the "back" button on the player interface doesn't work so I cannot force a particular song to replay when it comes up as part of a station.