This app is to help you extract music/audio out of various video files, cut, join and merge with other music files, and export to Mp3 and any other music format.
It:
1. lets you import various format video and music on your phone
2. allows you to choose any portion in video/music files easily by simple tap and drag. Most popular video/music/sound files are supported, including, MP4/M4V/MOV/MKV/AVI/WMV/ASF/WEBM/3GP/FLV/MPEG/MPG, MP3/M4A/WAV/WMA/OGG/AMR/AWB/OPUS/AAC/FLAC/MKA
3. cut, join MP3 audio by simple tap and drag
4. lets you add simple effects & transitions
5. even allows you to merge multiple music track as single one with effects
6. allows you to export mp3 with different qualities
7. allows you to share the exported mp3 with other apps in your phone
8. load/save music project you are working on to get your job done easily
9. can export various music format: MP3/M4A/WAV/WMA/OGG/AMR/AWB/OPUS/AAC/FLAC/MKA

This app is still in development, and any suggestions are welcome.