Thank you for the clarification, Sebastien. A backport request has been logged:
https://bugs.launchpad.net/edgy-backports/+bug/79370 -- [edgy] gstreamer, rhythmbox won't read files over smb https://launchpad.net/bugs/60326 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
