1. A content-wrapper for binding searchable metadata to content files, the content-wrapper comprising: a content-file in an arbitrary computer-readable format; a plurality of metadata tags describing content in the content-file, the metadata tags bound to the content-file by the content-wrapper within a single computer-readable file, the plurality of metadata tags containing textual information readable by search software; and wherein the metadata tags are read by the search software but the content-file is not read by the search software, whereby the search software searches the metadata tags bound with the content-file having the arbitrary computer-readable format.