I have played this sound a dozen times now, and for the life of me I can't tell what it's saying.
Also, which part of Dreams of the Yellow King are those four (Greeting, Want to Wake up, That's a good scream, and This nightmare...) sounds supposed to be used for?
"Wieralai sends her regards" is what it's saying. That name shows up in one of the prior soundsets (Caravanserai). Your second question I can't answer, as I don't own the adventure.