private void button1_Click(object sender, EventArgs e) { axWindowsMediaPlayer1.settings.balance = -10000; } private void button2_Click(object sender, EventArgs e) { axWindowsMediaPlayer1.settings.balance = 10000; } private void Form1_Load(object sender, EventArgs e) { axWindowsMediaPlayer1.URL = @"F:1.wav"; axWindowsMediaPlayer1.Ctlcontrols.play(); }