MP4 is a good video format, but what if you want to listen to it with your MP3 player?
Just convert MP4 to MP3 online with this free service.
Select your MP4 on your device, wait a few seconds and here you are:
your MP4 is now an MP3. All this for free.
In addition, you can also post the converted MP3 to SoundCloud. Enjoy!
If you don't know the format of your input file, just convert video to MP3.
The service will handle the nitty-gritty for you.