I've tried setting up a script to hardlink my files to my box.com account (as it's a backup of my music library). As I want to run it automatically to sync my music across several devices, I wanted to use rsync as I'm on Mac OS X 10.7.4 (if anyone cares).
The script I came up with however only copies the files instead of hardlinking them (the available disc space lowers when I start the script). What I'm trying to achieve is the box.com app syncing something outside its actual folder.
This is the script I use:
rsync -azluPhmt --progress --link-dest=./iTunes ./iTunes/Users/admin/Box.com/iTunes --delete-during --exclude="*Album Artwork*"