我正在尝试向 Rhythmbox Radio 添加一个链接，它说我需要额外的媒体编解码器，但我已经安装了受限额外，甚至检查我安装的软件包列表以查看 gstreamer-plugins 是否都已安装。我在网上找不到任何相关或最新的帮助，请帮助。
~$ sudo apt list --installed | grep gst
[sudo] password for eanlee:
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
gir1.2-gst-plugins-base-1.0/bionic-updates,now 1.14.1-1ubuntu1~ubuntu18.04.1 amd64 [installed]
gir1.2-gstreamer-1.0/bionic-updates,now 1.14.1-1~ubuntu18.04.1 amd64 [installed]
gstreamer1.0-alsa/bionic-updates,now 1.14.1-1ubuntu1~ubuntu18.04.1 amd64 [installed]
gstreamer1.0-clutter-3.0/bionic,now 3.0.26-1 amd64 [installed]
gstreamer1.0-fluendo-mp3/bionic,now 0.10.32.debian-1 amd64 [installed,automatic]
gstreamer1.0-gl/bionic-updates,now 1.14.1-1ubuntu1~ubuntu18.04.1 amd64 [installed]
gstreamer1.0-gtk3/bionic-updates,now 1.14.1-1ubuntu1~ubuntu18.04.1 amd64 [installed,automatic]
gstreamer1.0-libav/bionic-updates,now 1.14.1-1~ubuntu18.04.1 amd64 [installed,automatic]
gstreamer1.0-packagekit/bionic-updates,now 1.1.9-1ubuntu2.18.04.4 amd64 [installed]
gstreamer1.0-plugins-bad/bionic-updates,now 1.14.1-1ubuntu1~ubuntu18.04.1 amd64 [installed]
gstreamer1.0-plugins-base/bionic-updates,now 1.14.1-1ubuntu1~ubuntu18.04.1 amd64 [installed]
gstreamer1.0-plugins-base-apps/bionic-updates,now 1.14.1-1ubuntu1~ubuntu18.04.1 amd64 [installed]
gstreamer1.0-plugins-good/bionic-updates,now 1.14.1-1ubuntu1~ubuntu18.04.1 amd64 [installed]
gstreamer1.0-plugins-ugly/bionic-updates,now 1.14.1-1~ubuntu18.04.1 amd64 [installed]
gstreamer1.0-pulseaudio/bionic-updates,now 1.14.1-1ubuntu1~ubuntu18.04.1 amd64 [installed]
gstreamer1.0-tools/bionic-updates,now 1.14.1-1~ubuntu18.04.1 amd64 [installed]
gstreamer1.0-vaapi/bionic-updates,now 1.14.1-1~ubuntu18.04.1 amd64 [installed,automatic]
gstreamer1.0-x/bionic-updates,now 1.14.1-1ubuntu1~ubuntu18.04.1 amd64 [installed]
libclutter-gst-3.0-0/bionic,now 3.0.26-1 amd64 [installed]
libgstreamer-gl1.0-0/bionic-updates,now 1.14.1-1ubuntu1~ubuntu18.04.1 amd64 [installed]
libgstreamer-plugins-bad1.0-0/bionic-updates,now 1.14.1-1ubuntu1~ubuntu18.04.1 amd64 [installed,automatic]
libgstreamer-plugins-base1.0-0/bionic-updates,now 1.14.1-1ubuntu1~ubuntu18.04.1 amd64 [installed]
libgstreamer-plugins-good1.0-0/bionic-updates,now 1.14.1-1ubuntu1~ubuntu18.04.1 amd64 [installed]
libgstreamer1.0-0/bionic-updates,now 1.14.1-1~ubuntu18.04.1 amd64 [installed]
libgstreamermm-1.0-1/bionic,now 1.10.0+dfsg-1 amd64 [installed,automatic]
libqgsttools-p1/bionic,now 5.9.5-0ubuntu1 amd64 [installed,automatic]
libreoffice-avmedia-backend-gstreamer/bionic-updates,now 1:6.0.7-0ubuntu0.18.04.2 amd64 [installed]
python3-gst-1.0/bionic-updates,now 1.14.1-1~ubuntu18.04.1 amd64 [installed,automatic]
synfigstudio/bionic,now 1.2.1-0.1 amd64 [installed,automatic]
编辑：
~$ dpkg -l | grep rhythmbox
ii gir1.2-rb-3.0:amd64 3.4.2-4ubuntu1 amd64 GObject introspection data for the rhythmbox music player
ii librhythmbox-core10:amd64 3.4.2-4ubuntu1 amd64 support library for the rhythmbox music player
ii rhythmbox 3.4.2-4ubuntu1 amd64 music player and organizer for GNOME
ii rhythmbox-data 3.4.2-4ubuntu1 all data files for rhythmbox
ii rhythmbox-plugin-alternative-toolbar 0.18.0-1 all Enhanced play controls and interface for Rhythmbox
ii rhythmbox-plugins 3.4.2-4ubuntu1 amd64 plugins for rhythmbox music player