This window displays a list of your favorite applications used for playing / viewing / editing
input and output files inside VideoMach through the File > Play With command. The dialog
allows you to choose which applications are displayed in the list, using the following commands:
Add - Click this to add a new application to the list.
Edit - Shows a dialog where you can change the application
name and parameters.
Delete - Removes the selected application from the list.
Move Up - Moves the item one step up in the list.
Move Down - Moves the item one step down in the list.
Set Default - When File > Play command
is clicked (not Play With) this is the application that is called to
play that format.