This doesn't seem to have been posted previously, but I can't be sure so I aplogize if it's a redundancy.
This is a program for animating Posette's lips. I'd use it with a certain amount of reluctance because, as the ReadMe file says, it involves some re-writing of the code in Poser (my only previous attempt at that having been a failure to get rid of that blasted red outline...) but may prove to be very useful for animators, especially if combined with a voice-changing program like MorphVOx pro, which will change a male voice to female, and vice-versa.
http://www.fantasy3d.com/pfiles/python/rml/rml.html