A company called Pluggd has manage to get ahead of the game and worked out how to index podcasts, talk shows and other spoken word content. Pluggd also allows users to search audio files for specific words. Wired magazine describes the way it displays results:

“Enter your search term and you'll see mentions of your word highlighted in various colors — heatmap-style — on a timeline of the show. The redder “hot spot” areas represent denser clusters of your search term, and clicking on one will cause the player to jump straight to the discussion about your desired topic.

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