Sothink Video Converter is such a kind of video converter which also acts as a professional audio extractor that can read all kinds of videos, extract the audio files and convert them to any mainstream audio formats like AAC, FLAC, WMA, WAV, etc. in flash speed. This is a tutorial video describing how to extract the audio file from video with Sothink Video Converter. You can find more info from:http://www.sothinkmedia.com/video-converter/extract-audio-file-from-video.htm