UnicodeEncodeError in rhythmbox_control.py

With Awn (bzr) and dockmanager bzr rev. 69, I clicked in Rhythmbox on a song of which the name in the album and in the artist column has a í character (weird i) and then I got this:

ERROR:dbus.connection:Exception in handler for D-Bus signal:
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/dbus/connection.py", line 214, in maybe_handle_message
    self._handler(*args, **kwargs)
  File "/home/onox/awnrewrite/share/dockmanager/scripts/rhythmbox_control.py", line 149, in signal_playingChanged
    self.update_icon()
  File "/home/onox/awnrewrite/share/dockmanager/scripts/rhythmbox_control.py", line 187, in update_icon
    arturl = self.get_album_art_path()
  File "/home/onox/awnrewrite/share/dockmanager/scripts/rhythmbox_control.py", line 222, in get_album_art_path
    if os.path.isfile(arturl):
  File "/usr/lib/python2.6/genericpath.py", line 29, in isfile
    st = os.stat(path)
UnicodeEncodeError: 'ascii' codec can't encode character u'\xed' in position 23: ordinal not in range(128)