The Media Section contains the Use Shared Libraries property.
Use Shared Libraries
If you do not have an active Internet connection when browsing a local copy of your site on your own PC, you should uncheck the Use Shared Libraries checkbox. However, when you build a version of the site that you intend to upload to a web hosting service, Use Shared Libraries should be checked.
|Making a site that will be uploaded to a web server
|Making a site that will be distributed via removable media
|Making a site for use on your PC and you have an active Internet connection
|Making a site for use on your PC and you do not have an active Internet connection