'Compute ReplayGain value for the requested item.
:rtype: :class:`Gain`'

def _compute_track_gain(self, item):

    audiofile = self.open_audio_file(item)
    rg = self.init_replaygain(audiofile, item)
    (rg_track_gain, rg_track_peak) = self._title_gain(rg, audiofile)
    self._log.debug(u'ReplayGain    for    track    {0}    -    {1}:    {2:.2f},    {3:.2f}', item.artist, item.title, rg_track_gain, rg_track_peak)
    return Gain(gain=rg_track_gain, peak=rg_track_peak)
