Software and method that enables selection of on-line content from one of a plurality of network content service providers in a single action

1. A computer program product comprising a tangible computer readable medium having stored thereon computer-executable instructions for enabling a client computer system to retrieve selected content from a plurality of content providers, instructions comprising:

first computer program code for enabling the client computer system to select content to be retrieved from among a set of content available from the plurality of content providers and presented to the client computer system, wherein the first computer program code enables the client computer system to present the retrieved selected content with an interface that is customized to or by the respective content providers, wherein the first computer program code enables the client computer system to:

present an identification of the retrieved selected content;

receive selections associated with the retrieved selected content; and

present the retrieved selected content;

second computer program code for enabling the client computer system to request, in response to a single action per request, that the selected content be repeatedly and automatically retrieved, wherein the request involves exchange of one or more object manifests that reference the selected content between the client computer system and respective ones of the plurality of content providers, wherein the selected content comprises multiple separately selected content items available from at least two different respective content providers for providing each separately selected content item and retrieved from at least two different respective servers hosting each separately selected content item;

object manifest computer program code for enabling the client computer system to generate the one or more object manifests for the selections, each including one or more manifest list entries of the selected content and corresponding source addresses for the selected content; and

third computer program code enabling the client computer system to retrieve the selected content from the plurality of content providers as identified by the one or more manifest list entries and corresponding source addresses; and

fourth computer program product code for enabling the client computer system to persistently store at least one of retrieved selected content and an identification of available content from the plurality of content providers in a storage device.

2. The computer program product of claim 1 , wherein the second computer program code enables the client computer system to repeatedly and automatically retrieve information regarding availability of the selected content according to a schedule.

3. The computer program product according to claim 2 , wherein the second computer program code enables the client computer system to retrieve information relevant to setting the schedule from corresponding content providers.

4. The computer program product according to claim 1 , wherein the second computer program code enables the client computer system to retrieve the selected content based on subscription information stored at the client computer system.