Showing all music in a List box

I'm creating a Media Player with VB.Net 2003. I can browse out and select a song to play and it plays it, but I would like all my music in the "My Music" Folder to appear is a listbox. So i can select from there what song i want to play. Can anyone help me on how to do this? Here is the code I have right now:
Private Sub btnBrowse_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnBrowse.Click
Const DATA_FILE_EXTENSION As String = ".mp3"
Dim dlgFileDialog As New OpenFileDialog
With dlgFileDialog
.Filter = DATA_FILE_EXTENSION & _
" files (*" & DATA_FILE_EXTENSION & "|*" & DATA_FILE_EXTENSION
.FilterIndex = 1
.RestoreDirectory = True
If .ShowDialog() = DialogResult.OK Then
'Play the sound file
Me.AxWindowsMediaPlayer1.URL = dlgFileDialog.FileName
End If
End With
End Sub

Try this:

VB Code:

Dim folderPath As String = "c:\NameOfFolder"
Dim songList() As String = System.IO.Directory.GetFiles(folderPath, "*.mp3")
ListBox1.DataSource = songList

this should display all .mp3 files in the listbox.