public static void Main()
{
Artist prince = new Artist("Prince");
prince.AddToPlaylist("Purple Rain");
prince.AddToPlaylist("Little Red Corvette");
prince.AddToPlaylist("Kiss");
prince.AddToPlaylist("When Doves Cry");
MediaPlayer player = new MediaPlayer();
player.PlayMedia(prince);
AudioBook howto = new AudioBook("How to Win Friends & Influence People", "Dale Carnegie");
player.PlayMedia(howto);
MovieSoundTrack starWars = new MovieSoundTrack("Star Wars");
starWars.SelectTrack("Opening Credits Theme");
player.PlayMedia(starWars);
}
internal void PlayMedia(AudioBook howto)
{
throw new NotImplementedException();
}