Maybe you are facing bug 530372, please run rhythmbox in a terminal as:
rhythmbox --debug &> rhythmbox-debug.txt , then follow your steps to
reproduce the bug and attach that resulting log file to the report.
Thanks!
** Changed in: rhythmbox (Ubuntu)
Importance: Undecided => Low
** Changed in:
** Attachment added: "Dependencies.txt"
http://launchpadlibrarian.net/43694736/Dependencies.txt
** Attachment added: "GConfNonDefault.txt"
http://launchpadlibrarian.net/43694737/GConfNonDefault.txt
** Attachment added: "GstreamerVersions.txt"
http://launchpadlibrarian.net/43694738/Gstre