audioclip length half

now i have a mp3 audio load by WWW class, but the length is just half of the real length, test code can be very simple, and it happened on Android, i think this is a Bug

Code (CSharp):

1. AudioClip audio = www.audioClip;
2.                     Debug.Log("audio.channels:" + audio.channels);
3.                     Debug.Log("audio.length:" + audio.length);
4.  

and it can just play half of the audio

 

Code (CSharp):

1.                     AudioClip audio = www.GetAudioClip(false, true);
2.                     Debug.Log("audio.length:" + audio.length);
3.  

if i use this code, the out put length is half too, but the audio can play full.....


anyone has some ideas?