It looks like SmartWare is creating subdirectories for each device, and each backup disk on each device, and recreating the full file structure. In which case, there doesn’t seem to be much point in trying to use individual Music, Pictures and Videos backup shares; just leave everything in the default SmartWare share, and point Twonky at the suitable point in the hierarchy.
This would be painful if you access media using the MyCloud as a file server (e.g. using SMB or NFS).
If you point Twonky at the full path, ending in your Music, Videos and Pictures folders, the views you will see from DLNA (those using logical structure (metadata), rather than physical structure (file path)) will be simpler, and will hide the full path.
Alternatively, look at SmartWare to see if there’s any way to eliminate the preamble path, and just get it to store Music under Music, etc.
My PC is ancient, and doesn’t have enough disk space to store my media collection (it has IDE disk interfaces only, no SATA…). So I use my MyCloud as my primary media store, and back it up to USB disks I connect to the PC. Like larry suggests, I use a custom xcopy script to control what I back up where. The script shuts the PC down when finished, so I often use it in place of a manual shutdown.
I have a second xcopy script to find ‘obsolete’ files (essentially, a ‘reverse’ of the first, but which merely lists changes, rather than copying anything), which I process by hand; since the PC is data master for some files, if I upload anything to my network drive, I have to update the ‘master’. I may reconsider this approach, and make the NAS master for everything…
I recently did a big backup and tidy session, and now my masters and backups are in sync.
Robocopy is a more up-to-date replacement for xcopy. It’s part of the Windows Resource Kit.
An alternative may be SyncToy, which I keep meaning to play with.