The hell are you people talking about? I have the book right here and I don't see typos or mistakes.
Pretty much every download is based off of a scan of the book which was done improperly. I guess the equipment used couldn't read it well enough as some characters are switched for similar looking ones.
For example, you'll often find "n" where an "h" should be, or "rn" where an "m" should be.
the audio book is on youtube. I know your asking for a downloadable text version but I am not sure where you might find that.