设置播放器声音

//获取系统音量
                System.Speech.Synthesis.SpeechSynthesizer _S = new System.Speech.Synthesis.SpeechSynthesizer();
                MessageBox.Show(_S.Volume.ToString ());

//调整音量

      Audio.Volume=21;

原文地址:https://www.cnblogs.com/teyond/p/Volume.html