A free program for Android, by WrongTurn Apps.

Video To MP3 Converter is the easiest way to convert videos to high-quality MP3s. If you have a lot of video files and you want to extract audio from them, then you should try this app. You will not regret it.

This app can convert many different video formats to MP3, including WMV, AVI, 3GP, etc. You can also cut the audio from the video using several options, such as the duration, the start and end times, and so on. You can also add effects to the audio, such as a volume boost, a frequency boost, a volume change, etc.

The app has a built-in player to play the resulting audio file. You can also download the mp3 file and play it on your phone or computer.