Open the the joey_head.mb scene (you can download it from lbrush.com), select the 'head' object and open the 'LBrush1' tab in attribute editor. The sample file contains the set of phoneme targets that are pre-loaded into phoneme swatches
Load the sound file (Maya Menu / File / Import...)
Set the playback speed to 'Real-time (24fps)' so maya will be able to play the sound (Maya Pprefereces / Settings / Timeline / Playaback Speed)
Right click the Timeline then select in 'Sound' submenu the name of your sound file
Now you can hear you sound when animation is playing. You can use LBrush 'Step Forward/Backward' buttons (LBrush shelf) or use maya standard hotkeys or timeline scrubbing. The difference with standard Maya's 'step forward' hotkeys is that a frame worth of sound will be played when you use LBrush button/shortcut. We also append that onto maya's hotkeys.
Click the phoneme swatch's picture area - a keyframe will be created at current time, than you can play your animation and render in usual way.
Click above or go here
