4Videosoft Video to Audio Converter is the easy-to-use video to audio converter associated with powerful functions. It can convert between all the audio formats like AAC, AC3, AIFF, AMR, AU, FLAC, MP3, M4A, MP2, OGG, WAV, WMA as the powerful audio converter.The most important thing is that it can extract audio from video and convert to the mainstream audio formats, such as convert MP4 to MP3.