You have to convert the format, why not try 3gp and amr format?
If you have any difficulties in search, download or convert video/audio,
You may try this powerful and easy-to-use video/audio converter. It can help you convert video/audio, my friends recommend it to me, and it’s easy to use and works pretty well for me.
With it you can:
1: search videos and free music from popular online social media websites like YouTube, Dailymotion, and many others.
2: download music and videos that your are searching for
3: convert these videos/ audios to any format as you like.
you can find it here:
http://www.downloadvideos-convert.com/download-youtube-videos.html