To answer your first question, I did not sample any real instruments or use any live players on WC3, though that's not the first time someone thought I did. The only sounds I used for the video scenes (all the game play was MIDI) were from the Kurzweil K2000 orchestral ROM set and a few from the Roland Sound Canvas. There was one particular solo trumpet patch in there that did sound pretty realistic in the mix.
To answer your other question, I've been involved in other projects lately as well as dealing with the aftermath of the attacks. My dad was on the 72nd floor of the WTC when it was hit. He's ok, but I was a mess for a while. I did send an email just a few minutes ago to EA legal to reopen the discussion. At this point I think it should not take too long to find out what it will cost me to license the music. Then I'll send you a note.