def supported_player(cls, cmd):
        """
        Check if the current player supports adding a title

        :param cmd: command to test
        :return: name of the player|None
        """
        if not is_win32:
            # under a POSIX system use shlex to find the actual command
            # under windows this is not an issue because executables end in .exe
            cmd = shlex.split(cmd)[0]

        cmd = os.path.basename(cmd.lower())
        for player, possiblecmds in SUPPORTED_PLAYERS.items():
            for possiblecmd in possiblecmds:
                if cmd.startswith(possiblecmd):
                    return player
Check if the current player supports adding a title

        :param cmd: command to test
        :return: name of the player|None