void left_down (wxMouseEvent &);
void left_up (wxMouseEvent &);
void right_down (wxMouseEvent &);
void mouse_moved (wxMouseEvent &);
void playlist_changed ();
void left_down (wxMouseEvent &);
void left_up (wxMouseEvent &);
void right_down (wxMouseEvent &);
void mouse_moved (wxMouseEvent &);
void playlist_changed ();