How to disable original audio from movie

Project settings, video, _volume slider_. I don't have 9.1.1 but it's there on 9.0.0.

Another suggestion:

Open your movie in QT Player (QTPro). CMD-J and look for the "sound track" (as it's called). Turn its volume all the way down. Re-save the movie in this state. If you want to listen to the sound coming from the movie at a later time, do the opposite: open the movie, CMD-J, turn the volume of the sound track back up, re-save.

Note that in some movie files there will be more than one sound track, so naturally you'll have to figure out which ones to turn down.

-iS-

Ok, I dont have Logic 9, but I import movies into Logic Pro 8 all the time. So, if the format has changed I apologize if this doesnt help.
But heres what I do: I create an empty project>select stereo audio track>Options>Movie>Open Movie....then when video appears by default the volume will be turned down. Then go back to Options>Movie>Import Audio from Movie....then a box will appear asking you "Choose what tracks to import". Should say "Sound 1 and 2 channels 16bit 44.1k)..make sure that is selected. Then you will see it import. Then go over to your Audio bin and drag the audio over on the audio track you created.

Open the Inspector. Open the Movie area at the top of the Inspector. Double-click on the image from the movie. The movie opens in a movie window. At the lower-left corner of the movie window is a speaker icon. Click on it. It's a volume control menu. Pull it down.

As Spud said, by default this volume should be down. But maybe yours got turned up somehow.

The movie window is now completely clean on its sides, as you can see from the fig

How odd. Thanks for posting that picture. I wonder why it is that way.

But it doesn't matter much, since iSchwartz gave you a very good solution.