first performs an indexing process on each media file 104 106 in the depicted example the results of the indexing process are two phonetic audio track pat files the first pat file pat caller file 110 is a searchable phonetic representation of the audio track corresponding to the caller audio input signal and the second pat file pat agent file 112 is a searchable phonetic representation of the audio track corresponding to the agent audio input signal during a search phase the wordspotting engine 108 performs phonetic based query searching on the pat agent file 112 to locate putative occurrences also referred to as u201c putative hits u201d or simply u201c put hits 114 u201d of one or more queries e g search term or phrase in the pat agent file 112 details of implementations of the wordspotting engine 102 are described in u s pat no 7 263 484 titled u201c phonetic searching u201d issued aug 28 2007 and u s patent application ser no 10 565 570 titled u201c spoken word spotting queries u201d filed jul 21 2006 u s pat no 7 650 282 titled u201c word spotting score normalization u201d issued jan 19 2010 and u s pat no 7 640 161 titled u201c wordspotting.