This app is a great utility for easily and quickly converting video to audio / mp3. The app uses the video files present on your device.

Some of the features -
Super Easy to use
Simple and Clear instructions
High quality files created

Convert Audio - Video to MP3 - Quick and Easy way to convert your favourite videos to audios and listen in mp3 format. Or use them as ringtone audio.
View Converted Files - Check out the old files and play. Remove the unused files.
Share / Save - Share your favourite files with friends OR Save in your chosen folder.