1. A method of searching audio data, comprising: defining search criteria containing both at least one search phrase to be used in searching contents of at least one audio segment and at least one data value representing information pertaining to said at least one audio segment; using at least one computer to search a set of audio segments for said at least one search phrase and said at least one data value; and producing a set of results of occurrences of said at least one search phrase within said set of audio segments with information matching said at least one data value such that a given occurrence is a match for said search phrase within a minimum confidence level; wherein said step of defining includes defining a plurality of search phrases, said step of searching includes searching said set of audio segments for said plurality of search phrases, and said step of producing includes producing a set of results of all audio segments including (i) at least one occurrence of a selected required one of said plurality of search phrases and (ii) non-occurrences of at least one selected forbidden one of said plurality of search phrases to be excluded from within said set of audio segments, said occurrence and non-occurrence determined with respect to said minimum confidence level that a given occurrence within said set of audio segments is a match for a corresponding one of said plurality of search phrases.