Usar o APKPure APP
Obter o APK da versão antiga de Audio Extractor para Android
Converta o áudio do seu vídeo para MP3.
Extract audio from video and convert to MP3 audio. This application supports video format(MP4,3GP,FLV and so on).
This app uses LGPL ffmpeg and libmp3lame libraries as codec and supports only ARMv7 and higher.