Alas, It was neither the Lich or the Halaster sound set. This particular set seemed fan made, as the titles of each response were 1, 2, 3 etc, so I think it was fan created. One of them had something to do destroying a book. The voice was deep and sinister with no special effects. Perfect for what I was looking for. Ringing a bell with anyone?
Update, I found it! It’s the Dread Wraith conversation-not sure what set it is from though. My players are going to poop themselves when the house starts talking to them!