you need to prepare the audio per character
so go into audio find it and remember the name
then click prepare and dialogue and then you will have the list of characters and select each character and assign the dialogue. Usually I start with them all shushed.
then go to the direct menu and direct the dialogue and choose each character and direct for each character where you want them to pause and talk.



unless i am not getting something the reason its all talk or shush is because you haven't directed the dialogue so its at the default setting picked for a character

hi there

you need to go into the prepare menu and prepare each character and then run the dialogue for each character using direct and shush them in the right place

here is a tutorial the interface might be slighly different but the instructions are the same and you will recognize what to do..

http://muvizu.com/Video/17229/Tutorial-15-Directing-Advanced-dialogue