1. In association with stored data derived from recorded speech of one or more speakers, a method for locating specified content included in the stored data, wherein said method comprises the steps of: converting an audio file comprising at least some of said recorded speech into a corresponding text file, wherein said text file comprises multiple text segments, each provided with a unique identifier; constructing a searchable index comprising a number of index elements from said text file, each of said index elements being associated with particular information located in one or more of said text segments; searching said index elements of said searchable index with one or more specified search arguments, in order to detect one or more text segments of said text file that each respectively contains at least some of said specified content; and using the identifiers of respective detected text segments to locate said specified content in said audio file.