Abstract: A system add method for controlling the execution or display to one or more pieces of software developed using the developer's software is provided. The system permits the developer to receive revenue for use of the software without inconveniencing the customer or the user. In more detail, the system has a customer site with one or more locations containing one or more assets wherein a master key is purchased by the customer from the developer that specifies the one or more locations on the site of the customer where the software is located. The master key is stored at a particular location on the site of the customer and each asset contains a content key that identifies the location of the master key. The system further includes a user computer that determines if the execution or display of the asset downloaded from the customer's site is authorized by the developer.