The Metadata Creation Tool (MCT) uses simple forms to collection and output Library of Congress METS/MODS/audioMD formatted XML files for each of your original WAV formatted audio files.  The Data Conversion Tool will take your WAV formatted file and create a standard directory structure where it will store the audio chunk into a Broadcast Wave formatted (BWF) file.  It will take the MODS data created by the MCT and embed that data into the aXML chunk of the BWF.  If the Automatic Audio Transcription (AAT) checkbox was used or the Audio Transcription Editor (ATE) during production of your ResCarta archive, then the transcribed text will also be embedded into the BWF file.