UnityEngine.WWW.GetAudioClipInternal C# (CSharp) Method

        private extern AudioClip GetAudioClipInternal(bool threeD, bool stream, bool compressed, AudioType audioType);
        private Encoding GetTextEncoder()

 public static AudioClip GetAudioClipCompressed(this WWW www, bool threeD, AudioType audioType)
 {
     return((AudioClip)www.GetAudioClipInternal(threeD, false, true, audioType));
 }