1. A server apparatus connectable to one or more requestor processes and at least one a source of titles over a computer network comprising: a processor; a memory coupled to the processor; a network interface coupled to the memory and processor; conversion logic responsive to a unique identifier of a title and configured to convert the unique identifier of the title into a location identifier indicating an address on the computer network where the title may be accessed; and activator generator logic responsive to the network interface and configured to generate an activator, said activator comprising a bytecode object and representing a portion of client software for receiving and running said title, said activator including keying material in obfuscated bytecode for decrypting the title located at the address indicated by the location identifier and a token authorizing access to said title for a predetermined time, the activator configured to communicate with said server to request a replacement activator and become inoperable when the activator fails to request the replacement activator, each activator uniquely associated with a client and uniquely associated with a briq object comprising a self-contained file system and at least one file for running said title without installing the title on a target system.