This FREE app is specifically designed for sharing MP3 as Video.
With this app you can convert most music files to video in just two steps.
1) drag music file drop onto track
2) export video

In addition it:
1. allows you to choose any portion in music files easily by simple tap and drag. Most popular music/sound files(mp3/wav/m4a/...) are supported
2. allows you to add photo(jpg/png/gif...) and text by simple touch and adjusts duration automatically
3. even supports repeating a GIF automatically to fit music length
4. lets you add simple effects & transitions
5. lets you import music and photo files from phone storage directly
6. provides zoom-able track panel for precise clip adjustment
7. provides zoom-able music and photo view for your convenience
8. allows you to export and upload video(480P/720P/1080P ) to popular video site
9. allows you to add typical metadata like author/album/artist/...
10. allows you to share the video with other apps in your phone
11. support video format: MP4 M4V MKV WEBM 3GP.

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