62. A method of indexing and searching timed media files, as recited in claim 25 , wherein said processing of language includes the calculation of one or more major topic shifts.
62. A method of indexing and searching timed media files, as recited in claim 25 , wherein said processing of language includes the calculation of one or more major topic shifts. 74. A method of indexing and searching timed media files, as recited in claim 62 , wherein each topic shift that is identified is rated by a boundary sharpness measure; said boundary sharpness measure is calculated for all potential topic shift locations; and local maxima of the boundary sharpness measure are identified.