I just stumbled across an interesting utility, called SyncToy. Version 2.1 of this tool is available, free, from Microsoft at: http://www.microsoft.com/en-us/download/details.aspx?id=15155. This is the latest version of this tool, which was first published in 2009, so it’s not really new.
This highly customisable tool synchronises files and folders between file locations, kind of like a robocopy designed just to synch your files between two locations. You could use this to sync files such as photos, music files etc. with other computers. This might be easier than worrying about backup for these files.
To find out more about Synchtoy, or to ask questions – see the synch toy forum at: http://social.microsoft.com/Forums/en-US/home?forum=synctoy.