Mouseferatu
Hero
RE: Obi-Wan lying to Luke in RotJ and telling him Owen was his (Owi-Wan's) brother...
May I remind you that this occurred only in the novel, not in the movie. Lucas has stated many times that anything printed in a novel is canon only unless and until it is contradicted by something in a movie. Obviously, at the time, the author--and possibly Lucas himself--thought that Owi-Wan and Owen were related. Now they aren't. It doesn't matter, though, because in official continuity, Obi-Wan never claimed they were.
Heck, I've been told that, in the novelization of ESB, Yoda's blue, so we can all see how accurate the novels are.
RE: The voice yelling "Anakin! No!"
Definitely Qui-Gon. First, as someone pointed out, it sure sounds like the exact same intonation as from Ep 1. Second, it's Qui-Gon in the novel, and while--as I've just pointed out--things don't always jibe between movies and novels, A) there's no reason to change this detail, and B) Lucas seems to keeping a much tighter grip on continuity with the new trilogy and its subsidiary products. Finally, Liam Neeson made some comment ages ago about having a brief part in the 2nd movie.
May I remind you that this occurred only in the novel, not in the movie. Lucas has stated many times that anything printed in a novel is canon only unless and until it is contradicted by something in a movie. Obviously, at the time, the author--and possibly Lucas himself--thought that Owi-Wan and Owen were related. Now they aren't. It doesn't matter, though, because in official continuity, Obi-Wan never claimed they were.
Heck, I've been told that, in the novelization of ESB, Yoda's blue, so we can all see how accurate the novels are.

RE: The voice yelling "Anakin! No!"
Definitely Qui-Gon. First, as someone pointed out, it sure sounds like the exact same intonation as from Ep 1. Second, it's Qui-Gon in the novel, and while--as I've just pointed out--things don't always jibe between movies and novels, A) there's no reason to change this detail, and B) Lucas seems to keeping a much tighter grip on continuity with the new trilogy and its subsidiary products. Finally, Liam Neeson made some comment ages ago about having a brief part in the 2nd movie.