Firebird Question
 

Does anyone know how to tell Firebird how to open mpegs and other videos? when i first clicked on a mpeg a dialog box appeared and allowed me to choose how to handle it but i chose the wrong program and it does nothing when i click on an mpeg and i cant find that dialog box in the options. Thanks

You probably need to configure that somewhere in your window manager. Like, in Gnome its under "Preferred Applications" in Desktop Preferences.