help me with final touch please

I have a music player made in vb2008
i have two ways to add files :
first way is to press add files button and it's ok
second way is to drag files (audio files) and drop them into my playlist (listbox1)
the problem is that when i drag them and drop them into listbox1 they are moved with the full path not only the name
eg. (D/songs/Toni Braxton - Un-Break My Heart) i want to make them like this (Toni Braxton - Un-Break My Heart) just name not full path ..
i use this code in listbox1 in dragdrop event

 Dim Files As String() = CType(e.Data.GetData(DataFormats.FileDrop), String())
        For Each FileName As String In Files
            ListBox1.Items.Add(FileName)
        Next 

and in listbox1 in dragenter event i used the following code

  If e.Data.GetDataPresent(DataFormats.FileDrop) Then
            e.Effect = DragDropEffects.Copy
        End If 

help is appreciated .. thank u