artists view: don't get grilo's author key if artist is stored in artist key

[vrutkovs]

File: ./gnomemusic/view.py
Function: _add_item at line 487
Total time: 0.009724 s

Line #      Hits         Time  Per Hit   % Time  Line Contents
==============================================================
   487                                               @profile
   488                                               def _add_item(self, source, param, item):
   489        50          369      7.4      3.8          self._offset += 1
   490        50           94      1.9      1.0          if item is None:
   491                                                       return
   492        50           43      0.9      0.4          artist = "Unknown"
   493        50         1240     24.8     12.8          if item.get_author():
   494        50          459      9.2      4.7              artist = item.get_author()
   495        50         1712     34.2     17.6          if item.get_string(Grl.METADATA_KEY_ARTIST):
   496        50          845     16.9      8.7              artist = item.get_string(Grl.METADATA_KEY_ARTIST)
   497        50          180      3.6      1.9          if not artist.lower() in self._artists:
   498        19         1142     60.1     11.7              itr = self._model.append()
   499        19           73      3.8      0.8              self._artists[artist.lower()] = {"iter": itr, "albums": []}
   500        19         3396    178.7     34.9              self._model.set(itr, 2, artist)
   501                                           
   502        50          171      3.4      1.8          self._artists[artist.lower()]["albums"].append(item)

[kyoushuu]

We should use get_artist instead of get_author. This is where Tracker stores the artist, and if we use author instead, the media art hashes won't match.

[kyoushuu]

Sorry, misunderstood the problem. Changing the title to clarify things. Still, we must prioritize get_artist().