For userform1 you can add some code like this:
Private Sub lstSelection_DblClick(ByVal Cancel As MSForms.ReturnBoolean) MsgBox "You double clicked me. You want to get information on the album " & lstSelection.Text End Sub
This will run when you double click on the listbox. Depending on how you will store the track names you can find them using the listindex properly of the listbox (since that will correspond in some way to the row the data is in).