Spotify sync fix
Many people have been experiencing a problem with loss of synced downloaded playlists to their android devices. It seems the cause is the latest app update saves the fiules to a different location (the device USB instead of the SD card) which presumbaly means it can therefore be run on on non SD card enabled devices which makes sense, though a download option would make even more.
trouble is you have to manually delete the old folder (with the app uninstalled) off the SD card, re-install the app, and download the playlists again. It appears to have worked for everyone on the spotify forum that's tried it (which doesn't appear to be the majority by any means) including eventually me!