1. A method comprising: composing a packaged content for delivery over a network to a subsystem, the packaged content having a package containing content, the package having package elements; tagging the package and the package elements using meta-data, wherein each package element corresponds to a content type, and wherein tagging includes interfacing with the meta-data to obtain first tags that characterize the package and second tags that characterize the package elements, the second tags including location tags to indicate locations of package elements within the package according to a pre-defined location protocol, wherein tagging further includes filter tagging for filtering the content for categorizing of the content, wherein filtering is based on simple matching or correlation matching or platform tagging for tailoring the package elements to match specific platform capabilities, wherein tagging further comprises at least one of assigning an element tag to each of the package elements, grouping the package elements according to corresponding element tags, assigning a package tag to a package based on the grouped package elements, and marking the package for inclusion into a playlist, wherein the package tag and the element tag form the meta-data, wherein tagging further comprises assigning a content expiration tag for indicating a lifetime of contents within a network; and serializing the meta-data into a file system compatible with the subsystem using a markup language.