How do I get a mixer to show up in Soundtrack Pro?

Question

The problem is not using a mixer but I can't get one to show. I see my sound track, (can play) and did analysis and cleaned up but clicking all mixer buttons and choosing a different layout all 3 choices never give me a mixer.
The lower pane with the mixer highlighted is blank. I also set up a new project choosing multitrack with mixers or Seperate Mixer and video which show the mixers but as soon as I put my aif file into Soundtrack the mixer disappears from the window only the wave forms are there. I have posted this several times.There must be somebody who has a clue what is going on here? (Apple?)Thank you.
                                                                                                                                      W.W.

Answer 1

Since nobody could answer my cry for help (no you don't find it in the manual) I am entitled to the 10 points finding the solution. Here is how to get around not being able to get a mixer for your aif file you want to edit. When you double click Soundtrack Pro an empty window opens with an empty track 1 and track 2.
As a seasoned Apple user you think drag and drop the .aif audio file into those tracks you want to edit and use in your movie. Well you are in for a three day search for answers how to get that mixer to open that you want to use! If somebody (or the manual) would just say you can't do that you could have saved that time to do what you need to do!
In order to get the mixer(s) you need you must:
1. click on "New Project" on the top left: window opens with both video and audio mixer tracks in which you can drop you audio. You can than open Layouts and choose from 3 layout choices of mixers. Happy panning and mixing.
             W.W.