//Constructor
public TrackMetadata()
{
PSI = new ProcessInformation();
hWnd = PSI.getSpotify();
processid = PSI.getProcessId(hWnd);
}
//get process information.
public static void spotify_start_event()
{
hwnd_spotify = PSI.getSpotify();
processid = PSI.getProcessId(hwnd_spotify);
}