Replaygain audiotools backend crashes

[Kraymer]

Decided to give a try to another backend than mp3gain.
Tested with Python Audio Tools 3.1.1 and 2.22.

$ beet replaygain tchigi
Traceback (most recent call last):
  File "/usr/local/bin/beet", line 9, in <module>
    load_entry_point('beets==1.3.16', 'console_scripts', 'beet')()
  File "/usr/local/lib/python2.7/site-packages/beets/ui/__init__.py", line 1207, in main
    _raw_main(args)
  File "/usr/local/lib/python2.7/site-packages/beets/ui/__init__.py", line 1197, in _raw_main
    subcommand.func(lib, suboptions, subargs)
  File "/usr/local/lib/python2.7/site-packages/beetsplug/replaygain.py", line 936, in func
    self.handle_track(item, write)
  File "/usr/local/lib/python2.7/site-packages/beetsplug/replaygain.py", line 898, in handle_track
    track_gains = self.backend_instance.compute_track_gain([item])
  File "/usr/local/lib/python2.7/site-packages/beetsplug/replaygain.py", line 701, in compute_track_gain
    return [self._compute_track_gain(item) for item in items]
  File "/usr/local/lib/python2.7/site-packages/beetsplug/replaygain.py", line 730, in _compute_track_gain
    rg_track_gain, rg_track_peak = rg._title_gain(rg, audiofile)
AttributeError: 'replaygain.ReplayGain' object has no attribute '_title_gain'

I'm wondering if someone is using this backend with success.
@frubino maybe?

[sampsyo]

Thanks for trying it out! I didn't test this, but I did notice an obvious typo that caused this error. Maybe give that a try?

[Kraymer]

Yep i did notice this typo but did not test it properly , coz it does fix the problem with the 2.22.
And I edit the docs, the bump to 3.x apparently coincide with breaking changes in the API.