Backup iTunes using Automator

I have been searching for a tutorial or an explanation of how to program an Automator workflow or application to back up my iTunes library to multiple drives. I have a large amount of media associated with iTunes which puts me over the limit for iTunes Match. Plus my movies that I have gotten from digital downloads will not be synced through iTunes Match. Since I have so much I want as much redundancy as possible, preferably to backup each subfolder piecemeal onto multiple drives as well as Time Machine and a full backup of just iTunes on a large drive. With the amount I have it is also cumbersome to order everything by hand and not have to be overwriting every time.

I have read up on rsync and a handful of Automator tutorials trying to figure something out. I can't get rsync to install, or if it is, run. I also have not found out how to make a cascade in Automator to sync only changed files, weather they are new or deleted.

I'm hoping someone can help me create the correct cascade to make this happen. I know Automator can do this I just don't know how.

Below are two links to pages from which I was pulling aid.

http://blog.midnightchannel.net/2011/04/itunes-library-backup-automator-mac.html

https://discussions.apple.com/thread/3324518?start=0&tstart=0

Thank you.