VB Application Running From CD (or DVD) With Media Player And Use Esc?

I have an issue with my project and I don't find the answer. I created a CBT project. The end result should be as follows: when the user inserts the CD (or DVD), the player will boot automatically. The media player and the video files are on the CD. When the media player is launched, the user can select the CBT he/she wants from a ListBox which will then play the file on the player. So far I build the player with all the necessry buttons but I have two things I can't find the solution for:1. how can I place the media player play the selected file from the listbox if the media files are on the same CD where the media player is located? As you can see on the below code, I manage to do that is the files are located on a drive (C:/ or D:/).2. I placed a FullScreen button which will expand the WMP to fullscreen mode but I can't figure out how to return it to the initial mode if pressing a key, for instance ESC.

Public Class frmMain
Private Sub frmMain_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown

[code].....