Here are the data structures with brief descriptions:

njb3_state_t
njb_datafile_struct
njb_device_entry
njb_eax_struct
njb_error_stack_struct
njb_keyval_struct
njb_playlist_struct
njb_playlist_track_struct
njb_songid_frame_struct
njb_songid_struct
njb_state_t
njb_struct
njb_time_struct
njbdfhdr_t
njblibctr_t
njbplhdr_t
njbttaghdr_t