Comment 4 for bug 1661739

Thanks for the attention. I wasn't sure at all which package I should choose, and Amarok seemed like a decent guess. I don't have a Phonon VLC backend installed at all; only the gstreamer backend.

The gstreamer package versions I have installed are shown in the apt log; the following versions allow Amarok to play MP3s, and were installed on my system prior to that 'apt full-upgrade' run:

gstreamer1.0-libav:amd64 1.8.2-1~ubuntu1
gstreamer1.0-plugins-base:amd64 1.8.2-1ubuntu0.2
gstreamer1.0-plugins-good:amd64 1.8.2-1ubuntu0.3
gstreamer1.0-pulseaudio:amd64 1.8.2-1ubuntu0.3
gstreamer1.0-x:amd64 1.8.2-1ubuntu0.2
libgstreamer-plugins-base1.0-0:amd64 1.8.2-1ubuntu0.2
libgstreamer-plugins-good1.0-0:amd64 1.8.2-1ubuntu0.3
libgstreamer1.0-0:amd64 1.8.2-1~ubuntu1

Those were upgraded to the following versions, some combination of which breaks Amarok:

gstreamer1.0-libav:amd64 1.8.3-1ubuntu0.1
gstreamer1.0-plugins-base:amd64 1.8.3-1ubuntu0.1
gstreamer1.0-plugins-good:amd64 1.8.3-1ubuntu0.3
gstreamer1.0-pulseaudio:amd64 1.8.3-1ubuntu0.3
gstreamer1.0-x:amd64 1.8.3-1ubuntu0.1
libgstreamer-plugins-base1.0-0:amd64 1.8.3-1ubuntu0.1
libgstreamer-plugins-good1.0-0:amd64 1.8.3-1ubuntu0.3
libgstreamer1.0-0:amd64 1.8.3-1~ubuntu0.1

I haven't been able to narrow down exactly which of these 8 packages is/are responsible. I also have gstreamer 0.10.x packages installed, and I think those might have been pulled in by Steam, but none of those were upgraded as part of this 'apt full-upgrade' run.