153. A method of indexing and searching timed media files, as recited in claim 150 , further comprising the step of calculating a magnitude of relevance for each said at least one virtual document.
153. A method of indexing and searching timed media files, as recited in claim 150 , further comprising the step of calculating a magnitude of relevance for each said at least one virtual document. 154. A method of indexing and searching timed media files, as recited in claim 153 , further comprising the steps of calculating a magnitude of relevance for each said virtual document; and storing said magnitude of relevance for each said virtual document in said search index.