I finished your "Curse of the Forsaken" ten times maybe and it still drives me to play it. Again and again. Wonderful job you did. Best custom campaign I played for sure. Thank you for that.
Anyways, have you ever thought of adding Bolvar Fordragon as the character? He could, just like in WoW, become Lich King in your campaign too. I only disliked that part of campaign, I just didn't see Phaelynne as the 'Lich Queen'. But it is your campaign and you did quite a good job making it, that is just my opinion.
So it is impossible to create a new soundset without overwriting an older one?