namelabel.pack(side=TOP)

        levellabel = Label(self, textvariable=self.slider_var, font="Arial 11",

            bg='black', fg='white')

        levellabel.pack(side=TOP)

        self.scale.pack(side=BOTTOM, expand=1, fill=BOTH)

        bindkeys(self, "<Control-Key-l>", self.launch_subcomposer)

    def launch_subcomposer(self, *args):

        subprocess.Popen(["bin/subcomposer", self.name])

class KeyboardComposer(Frame, SubClient):

    def __init__(self, root, submasters, current_sub_levels=None,

        Frame.__init__(self, root, bg='black')

        SubClient.__init__(self)

        self.submasters = submasters

        self.name_to_subtk = {}

        self.current_sub_levels = {}

        self.current_row = 0

        if current_sub_levels is not None:

            self.current_sub_levels = current_sub_levels

        else:

            try:

                self.current_sub_levels, self.current_row = \

                    pickle.load(file('.keyboardcomposer.savedlevels'))

            elif button_num == 3:

                diff = 1

            else:

                return

            kc.change_row(kc.current_row + diff)

            self.valueOut(name, 0)

if __name__ == "__main__":

    parser = OptionParser()

    parser.add_option('--nonpersistent', action="store_true",

                      help="don't load or save levels")

                      help="attach to hardware sliders")

    opts, args = parser.parse_args()

    s = Submasters()

    root = Tk()

    tl = toplevelat("Keyboard Composer", existingtoplevel=root)

    startLevels = None

    if opts.nonpersistent:

        startLevels = {}

    kc.pack(fill=BOTH, expand=1)

    for helpline in ["Bindings: B3 mute; C-l edit levels in subcomposer"]:

        tk.Label(root,text=helpline, font="Helvetica -12 italic",

                 anchor='w').pack(side='top',fill='x')

    import twisted.internet

    try:

        ls = LevelServer(kc.name_to_subtk)

        reactor.listenTCP(networking.kcPort(), server.Site(ls))

    except twisted.internet.error.CannotListenError, e:

        print "Can't (and won't!) start level server:"