XAML:

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    DataContext="{Binding RelativeSource={RelativeSource Self}}"
    Title="Rocking Robin" Height="350" Width="525">
   
       
            ...
                   
                       
                           
                               
                               
                               
                               
                           
                       
                   
                ...


And code:

Class MainWindow
    Public _SongLibrary As ObservableCollection(Of ASong)
   
   
   

    Private Sub btnLoad_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles btnLoad.Click
        Dim ofd As New Microsoft.Win32.OpenFileDialog

        ofd.Filter = "MP3 Files (*.mp3)|*.mp3"
        If ofd.ShowDialog = True Then
            Dim Sng As New ASong
            Sng.FileName = ofd.FileName
            Sng.Title = InputBox("Enter Title", "Title", "Default Title")
            Sng.Artist = InputBox("Enter Artist", "Artist", "Default Artist")
            Sng.Album = InputBox("Enter Album", "Album", "Unknown")
            _SongLibrary.Add(Sng)
        End If
    End Sub

    Public Sub New()

   
        ' Add any initialization after the InitializeComponent() call.
        _SongLibrary = New ObservableCollection(Of ASong)

    End Sub
End Class

The play event fires, but there's nothing displayed.