new GridLayout(trackList.getNumberOfTracks() + 1, 1));
gl.setVgap(1);
t0 = trackList.getTrack(0).getTrackSlider();
panel.add(new TickPanel(t0.getMinimum(),
t0.getMaximum(), 10, t0.getPreferredSize()));
for (int i = 0; i < trackList.getNumberOfTracks(); i++) {
Track track = trackList.getTrack(i);
TrackSlider trackSlider = track.getTrackSlider();