The only reason I thought it might say ANNIE is because it sounds like it to me. No, it wouldn't make sense Leland hearing that...except for the fact that Laura had already seen Annie in her dream before she died (in FWWM) and since Bob inhabites Leland and Leland has been to the black lodge, he has already been in touch with Annie (since time has no meaning there)
I admit I like the idea, because it would be great forshadowing, and I think this is around the time that they decided Audrey and Cooper WEREN'T going to hook up...so they might have come up with the IDEA of Annie, but not have known how she would be introduced yet.
If you are looking for sense though...consider the JUDY crap from FWWM. At the end you see the monkey and hear the word "JUDY" whispered. It doesn't make sense there either....but it is still there.
However, it could very well be Daddy. hell, it probably is Daddy. I just don't hear that. It isn't that important...it is just something fun to think about.