which audio format is well support by most of device, I have some trouble to choose the audio format between multiple platform, which one is much more common?
MP3 is the most common one.
Take a look at this: http://cocos2d-x.org/projects/cocos2d-x/wiki/Audio_formats_supported_by_CocosDenshion_on_different_platforms
I use mp3 in iOS and ogg in Android. Ogg is recommended on Android, but it is not esencial.
get it, thanks