hi,
Have been trying to lip sync, got my 8 mouth shapes saved in the global library. Have put the sound through sound editor and got the letters for the right sound. How do you link the 8 drawings to the letters the sound editor has come up with to create the lip sync effect?
In the exposure view, (in the mouth column) it gives you which mouth symbol you should use but no image. Its probably something really obvious. thanks 
You have to create a Drawing level in the exposure sheet with a drawing for each mouth shape. Note the drawing name (number by default).
When you right click on the sound level you should see the Modify Lip-Sync Mapping command. In this dialog, you choose your Drawing level that contains your mouth shapes and map the Drawing Name (by default they are numbers).