The issue has been solved for me by using the same fix as in post#3 here:
https://bugs.launchpad.net/ubuntu/+source/gstreamer0.10/+bug/770158
Directory in question can be deleted from the terminal with:
rm -rf ~/.gstreamer-0.10
That folder was recreated with new contents when launching Rhythmbox
Removed application via Ubuntu Software Center and re-installed along
with available free add-ons, but issue remains.
Launching application from terminal produced info in attached text file.
Note that the first two lines of messages in this file only appeared
after re-installation.
** Attachment
Adding terminal output from:
~$ sudo lshw -C sound; dpkg -l |grep gstreamer; dmesg | egrep
'rhythmbox|callbacks'
as text file.
** Attachment added: "terminal_output_1.txt"
https://bugs.launchpad.net/ubuntu/+source/rhythmbox/+bug/992303/+attachment/3121576/+files/terminal_output_1.txt
--
Yo
Public bug reported:
Right-click on mp3/ogg file, select "Open With Rhythmbox Music Player."
Application opens but does not play. Clicking on "Play" button produces
window error message, "Couldn't start playback (null)." Clicking on
"Play" button a second time produces a different window error mes
--
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Desktop Bugs, which is subscribed to rhythmbox in Ubuntu.
https://bugs.launchpad.net/bugs/992303
Title:
Cannot play mp3 or ogg files in Rhythmbox after upgrade to 64-bit
12.04 Precise
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