Public Class Form1
    Dim WithEvents Playback As New AudioPlayback
    Microsoft.DirectX.AudioVideoPlayback()
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles Button1.Click
 
        Dim lied1 As String = TextBox1.Text
        Dim lied2 As String = TextBox2.Text
        Dim lied3 As String = TextBox3.Text
        Dim lied4 As String = TextBox4.Text
        If RadioButton1.Checked = True Then
            GoTo wav
        End If
        If RadioButton2.Checked = True Then
            GoTo mp
        End If
wav:
        If lied1 = "leer" Then
            GoTo l1
 
        End If
        Playback.Load(lied1)

Microsoft.DirectX.AudioVideoPlayback()