namespace HabilisDesign.iTunesCommander
{
public class Controller : IDisposable
{

#region Methods

///
/// Move this instance 1 track forward.
///
public void Next()
{
if ( State == ITPlayerState.ITPlayerStatePlaying )
{
m_App.NextTrack();
}
}

///
/// Move this instance 1 track backward.
///
public void Previous()
{
if ( State == ITPlayerState.ITPlayerStatePlaying )
{
m_App.PreviousTrack();
}
}
}
}

And for the Program’s switch:
case “next”:
{
controller.Next();
return;
}
case “prev”:
{
controller.Previous();
return;
}

Thank you very much…
Near.