Beyond Media maintains a set of directories (folders) that contain your media files for each different media type (music, photo, and video). The media directories make it easy for you to access your media files, because when you are browsing to find them, the browser limits itself to your media directories.
Beyond Media initially gives you the option to specify your media directories when you run the setup wizard.
Use each media type's settings menu to view and edit the media directories for that media type:
From each settings screen, you can view your media directories, and add or remove directories from your lists.