Using Mediafile to read the WOAF attribute fails on mp3 files

[Neurrone]

Problem

This was first reported by @noahbaculi in Neurrone/beets-audible#71

Importing mp3 files that don't have the WOAF attribute causes Beets to crash with a "'WOAF' object has no attribute 'text'" error.

Traceback (most recent call last):
  File "/lsiopy/bin/beet", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/lsiopy/lib/python3.12/site-packages/beets/ui/__init__.py", line 1870, in main
    _raw_main(args)
  File "/lsiopy/lib/python3.12/site-packages/beets/ui/__init__.py", line 1849, in _raw_main
    subcommand.func(lib, suboptions, subargs)
  File "/lsiopy/lib/python3.12/site-packages/beets/ui/commands.py", line 1398, in import_func
    import_files(lib, paths, query)
  File "/lsiopy/lib/python3.12/site-packages/beets/ui/commands.py", line 1329, in import_files
    session.run()
  File "/lsiopy/lib/python3.12/site-packages/beets/importer.py", line 360, in run
    pl.run_parallel(QUEUE_SIZE)
  File "/lsiopy/lib/python3.12/site-packages/beets/util/pipeline.py", line 446, in run_parallel
    raise exc_info[1].with_traceback(exc_info[2])
  File "/lsiopy/lib/python3.12/site-packages/beets/util/pipeline.py", line 260, in run
    msg = next(self.coro)
          ^^^^^^^^^^^^^^^
  File "/lsiopy/lib/python3.12/site-packages/beets/importer.py", line 1444, in read_tasks
    yield from task_factory.tasks()
  File "/lsiopy/lib/python3.12/site-packages/beets/importer.py", line 1267, in tasks
    tasks = self._create(self.album(paths, dirs))
                         ^^^^^^^^^^^^^^^^^^^^^^^
  File "/lsiopy/lib/python3.12/site-packages/beets/importer.py", line 1347, in album
    items = [item for item in items if item]
                              ^^^^^
  File "/lsiopy/lib/python3.12/site-packages/beets/importer.py", line 1396, in read_item
    return library.Item.from_path(path)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/lsiopy/lib/python3.12/site-packages/beets/library.py", line 697, in from_path
    i.read(path)
  File "/lsiopy/lib/python3.12/site-packages/beets/library.py", line 811, in read
    value = getattr(mediafile, key)
            ^^^^^^^^^^^^^^^^^^^^^^^
  File "/lsiopy/lib/python3.12/site-packages/mediafile.py", line 1254, in __get__
    out = style.get(mediafile.mgfile)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/lsiopy/lib/python3.12/site-packages/mediafile.py", line 492, in get
    return self.deserialize(self.fetch(mutagen_file))
                            ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/lsiopy/lib/python3.12/site-packages/mediafile.py", line 769, in fetch
    return mutagen_file[self.key].text[0]
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'WOAF' object has no attribute 'text'

Setup

Linuxserver docker image, lscr.io/linuxserver/beets:2.2.0-ls266

I'm importing books with my Beets-audible plugin, which uses the Woaf attribute.

[lukeIam]

see beetbox/mediafile#83