I am signed up for the Ubuntu One service, and have my computer added. Under System ? Preferences ? Ubuntu One, I have enabled all synchronizations, including for music. System ? Prefereneces ? Ubuntu One, it shows this message: "Synchronization Complete". But, when (via Rhythmbox) I purchase a song, no synchronization occurs. I can see the purchased song on the Ubuntu One web page, but the "Purchased Music" folder in Rhythmbox is empty, and the folder ~/.ubuntuone/Purchased from Ubuntu One is also empty. (So, the only way I can get at the song is to manually download it from the Ubuntu One web site to my computer.) I thought that these synchronizations should just happen automatically, but it appears that is not the case for me, and I can't figure out why. Thanks in advance for any help.