I just finished implementing a very quick draft of the lipsyncing feature and realised that it makes sense to push 1380 a bit, so that you'll get all the facial animation stuff in one package.
Instead, i give you 1375 (just unzip to your UT2004 folder as usual)! It's only a patch for those of you who really want to try out stuff with lipsyncing. Again, it's very early, but things are moving, quite literally.
You can find a changelist of the patch on the Wiki - where i also put a very rudimentary tutorial for those interested in lipsyncing.
To those not so early adopters, i'd suggest you just enjoy the clip below (it's a bit off - timewise, but hey):