Android App Module for MP4 file

Hi, I am looking for a developer who can make Andoid App module relating to MP4. --Module Spec-- Module extracts a MP3 sound file from a MP4 file. MP4 file Video)113Kbps,320*240,29.97fps,AVC(Baseline@L1.1)(1 Ref Frames) Sound)132.2Kbps,44.1KHz,2Channel,AAC(Version 4)(LC) --------------- I tried "Jffmpeg" but it needs phone root hack. I would like to publish the app included the module to Android Market. If you use open license source, its license must be Apache 2.0 or wider one. Please let me know how long it takes when you bid. Thank you, Keytel