The 'sync' feature will mirror anything in selected pictures/music/movies directories to a connected iThing. The reverse however, doesn't seem to work (or at least not by default). Example 1: Copy from computer to iThing Select the folders in iTunes preferences to mirror and hit sync. Files are copied from computer to iThing. Example 2: Copy from iThing to computer Start with some pictures in the iThing. Copy preferences for 'sync' still set as above. Move everything out of the Pictures folder on the computer to start with an empty folder. Hit sync. Expected: Pictures copied from iThing to Pictures folder on computer. Actual result: Pictures erased from iThing. So what it's doing is still mirroring the Pictures folder on the computer. The folder on the computer started empty so it mirrored that on the iThing. Ugly default but clear enough. (This must be fun for phone tech support to deal with. Yikes!) Can 'sync' be made bidirectional?