Note that MPXPLAY uses a non-standard source license that places an
additional restriction on the source code: "Please contact with the
author (with me) if you want to use or modify this source."

//**************************************************************************
//*  This program is distributed in the hope that it will be useful,       *
//*  but WITHOUT ANY WARRANTY; without even the implied warranty of        *
//*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.                  *
//*  Please contact with the author (with me) if you want to use           *
//*  or modify this source.                                                *
//**************************************************************************

This restriction means the source code is not really "open source."