* Backend Implementation
  [nothing]

* Frontend Implementation
  - Remove I18N messages like "<b>File Browsing</b>" from Glade.
  - Add error message dialogs.
  - Add a "Cancel" button (to the progressbar?).
  - Implement Undo/Redo.
  - Maybe a toolbar should be added.
  - Make plugins deactivateable in the preferences window.
  - Make plugins reorderable in the preferences window.
  - Make the statusbar (!= progressbar) work.
  - Frontend API review/cleanup.
  - Add context menus to the filebrowser.
  - Make the tageditor's entry boxes inactive when the are not checked.
  - When an invalid format string has been entered at tag->filename,
    there should be an error message and the "Save" button should be
    inactive.

* Plugin Implementations.
  - Make the Tag-Copier GUI more consistent to the ID3 input plugins.
  - Plugins need to provide widgets for the preferences handler,
    including an icon.
  - Write a nice plugin template.
  - Write more plugins. (Image display widget, Playlist plugin etc.).

* End User Documentation
  - Write a nice plugin development tutorial.

* Other issues / GNOME integration issues
  - Check the app for compliance with the HIG.
  - Create a .desktop file.
  - Consult "GNOME Accessibility for Developers" and check the
    application against the checklists.
  - Check the application with "at-poke" and assess the functionality
    of its accessibility implementation.
  - Confirm that the application offers full keyboard navigation.
    -> Add C^S for activating the "Save" button.
  - Make sure that Atk implementations are available for all custom
    widgets.
  - Consult with the GNOME accessibility team on any additional issues.
  - When all I18N stuff is done, contact the translation project again
    and get another review of the app's state.