Convert all kinds of video files to audio
     Supports MP3, AAC, M4A, WMA, FLAC, WAV, OGG audio formats
     Supports MP4, AVI, MPG, MOV, WMV, MKV, M4V, WEBM, FLV, 3GP video formats.
     The user interface is very simple and easy
     Ability to edit the audio file tag
     Ability to set bitrate rate