rglimiter and mono plugin cannot be added to the same bin

[Dustin Spicuzza]

When running the replaygain and mono plugins together, I get the following stack trace and audio files no longer play because the bins aren't connected together.

Traceback (most recent call last):
  File "/mnt/sdb1/virtuald/src/exaile/exaile/xl/event.py", line 264, in emit
    event.data, *cb.args, **cb.kwargs)
  File "/mnt/sdb1/virtuald/src/exaile/exaile/xl/player/pipe.py", line 358, in on_reconfigure_bins
    self.setup_elements()
  File "/mnt/sdb1/virtuald/src/exaile/exaile/xl/player/pipe.py", line 366, in setup_elements
    self._setup_finish(None, True, state)
  File "/mnt/sdb1/virtuald/src/exaile/exaile/xl/player/pipe.py", line 391, in _setup_finish
    gst.element_link_many(*elems)
LinkError: failed to link mono with rglimiter

[Johannes Sasongko (sjohannes)]

Apparenty in this case the issue is that I used capsfilter to force audioconvert to emit audio/x-raw-int (channels=1), but rglimiter expects audio/x-raw-float. The fix is to also allow emitting audio/x-raw-float (channels=1).