public void ReleaseUnusedAudioSourceControl()
 {
     for (int i = this.m_audioSourceControlList.Count - 1; i >= 0; i--)
     {
         AudioSourceControl audioSourceControl = this.m_audioSourceControlList[i];
         if (audioSourceControl == null || audioSourceControl.audioSourceObject == null)
         {
             this.m_audioSourceControlList.RemoveAt(i);
         }
         else if (!audioSourceControl.isPlaying)
         {
             audioSourceControl.Clear();
             this.m_audioSourceControlList.RemoveAt(i);
         }
     }
 }