I did more research with notify-osd. rythmbox actually sends 2 notification requests with embedded icon data, and the second one contains the cover art. I have re-opened bug #229197 that was mentioning that issue in rhythmbox.
-- rhythmbox does not show album art in notifications https://bugs.launchpad.net/bugs/332356 You received this bug notification because you are a member of Notify OSD Developers, which is subscribed to Notify OSD. Status in Notify OSD: Invalid Status in “rhythmbox” source package in Ubuntu: Invalid Bug description: the notifications show the rhythmbox icon rather than the album art. the album art does show up in rhythmbox. _______________________________________________ Mailing list: https://launchpad.net/~dx-team Post to : [email protected] Unsubscribe : https://launchpad.net/~dx-team More help : https://help.launchpad.net/ListHelp

