Take your AC3 or AIFF file and drag it onto the MPEG file that you dragged into the 'Graphical View'. Because MPEG files only contain video, you need to separately add the audio. Select the MPEG file you wish to work with and drag it into the 'Graphical View'. Add the video: Now that you have a menu, you need to add your video to the disc.Next, go into the 'Property Inspector' and set the start up action to be the menu item you just brought into the 'Graphical View'. Add a menu: Drag the first menu you wish to work with into the 'Graphical View'.Properly name everything: Go into the 'Property Inspector' and name your disc.Import the assets: Go to 'File'-> 'Import' and select the files you wish to work with.