Attempting to play a mp3 file with Rhythmbox on the latest Zesty daily build
Rhythmbox opens but no playback start.
On the terminal I got this:
Rhythmbox-Message: Missing plugin: gstreamer|1.0|rhythmbox-metadata|MPEG-1 Layer 3 (MP3) decoder|decoder-audio/mpeg, mpegversion=(int)1, mpegaudioversion=(int)1, layer=(int)3
/usr/lib/python3/dist-packages/sessioninstaller/core.py:47: PyGIWarning: Gst was imported without specifying a version first. Use gi.require_version('Gst', '1.0') before import to ensure that the right version gets loaded.
from gi.repository import Gst
/usr/lib/python3/dist-packages/sessioninstaller/core.py:48: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
from gi.repository import Gtk
Falling back to package information
Rhythmbox-Message: Missing plugins installed. Updating plugin registry ...
But the wizard to install the missing codec actually fails to launch.
This appears to be no bug in PK, but in Ubuntu's sessioninstaller which Ubuntu used instead of the real PackageKit for a while.
Please resolve this with Ubuntu.