The voice files seem to be screwed up. I'm on January 19th and ALL of Ayu's spoken lines for the past 4 or 5 scenes have been vastly different than what is said in the text. In fact, it seems to be repeating Nayuki and Kaori's lines from the morning of January 14th. It seemed kind of odd that Ayu managed to carry on a fairly normal conversation through dinner despite only screaming "Neko! Neko! (Kitty! Kitty!)" over and over.
This only seems to be happening with Ayu. Nayuki's voice doesn't seem out of place and seems to match the text, from what I can translate anyways.
Edit: Looks like it went back to normal on the 27th.