So I purged some of the gstreamer stuff with dpkg and reinstalled. The output now when I try to launch Rhythmbox is:
$ rhythmbox
[4:00:23.298488375] [43683] ERROR Controls controls.cpp:689 Control 0x00000000 not in the idmap
[4:00:23.298501354] [43683] FATAL default controls.cpp:654 assertion "validate()" failed in ControlInfoMap()
So I purged some of the gstreamer stuff with dpkg and reinstalled. The output now when I try to launch Rhythmbox is:
$ rhythmbox
[4:00:23.298488375] [43683] ERROR Controls controls.cpp:689 Control 0x00000000 not in the idmap
[4:00:23.298501354] [43683] FATAL default controls.cpp:654 assertion "validate()" failed in ControlInfoMap()