You may decide to change the front and matte clips that make up media. You can easily replace media with any set of front and matte clips from the EditDesk.
To change media:
The EditDesk appears.
You return to the Media menu. The names of the new clips replace those of the old clips in the Media list. The new clips are applied to all the media's surfaces.
To change the back clip:
The EditDesk appears.