Use of WAV audio (and other uncompressed audio formats) is so ancient these days so you'll likely want to do your own audio yourself. Mimic does great animation, but it's weak in the sound department IMHO.

Don't forget PoserSpeak ($45) which available here at Renderosity...

http://www.renderosity.com/mod/bcs/index.php?ViewProduct=37466

Requires Poser PP / 5 / 6 but since P5 was given away free that should less of a problem.

If you missed it, it's still available from Content Paradise for $20.