the ogg bug is an another issue, the conversion works fine but you need codecs which are not installed by default due to patents issues and rhythmbox doesn't display a dialog about the issue, http://bugzilla.gnome.org/show_bug.cgi?id=520209 is the upstream corresponding bug, I think there is a bug on launchpad too but I don't know the number
the ogg bug is an another issue, the conversion works fine but you need codecs which are not installed by default due to patents issues and rhythmbox doesn't display a dialog about the issue, http:// bugzilla. gnome.org/ show_bug. cgi?id= 520209 is the upstream corresponding bug, I think there is a bug on launchpad too but I don't know the number