In discourse analysis, transcribing audio or video data is a necessary evil. In this process of entextualization and recontextualization, recordings become transcripts – the textual simulacra discourse analysts rely on to analyze what and how people ‘do things’ with language.
There are number of commercial transcription tools available but if you’re looking for a basic (Windows only) speech transcription utility, I recommend VoiceWalker (if it’s bells and whistles you want, try Transana). VoiceWalker was designed by University of California linguists John W. Du Bois and Mary Bucholtz and can be downloaded freely.
In addition, a somewhat more ambitious tool is SoundWriter. This (beta) software is designed to link a transcription to the audio source file, “to help the researcher hear and visualize relationships between utterances in conversational interaction”. Download for free here.