HTPC synchronization

[Kevlar3D]

I have built a htpc system and I am satisfied with the performance of the system, need to do some serious playing around with the post processing features but so far everything is working great.

One big concern I have is streaming data over my wireless network, it seems to work well for standard definition content, music and pictures but high definition content has provided less than perfect performance. (to say the least)

I have 802.11g mimo equipment and no legacy equipment dragging the network down to "b" speeds. Overall I have just determined that my current wireless hardware does not meet my needs/expectations.

This means one of two things, store all of my content directly on my HTPC... or synchronize my HTPC with my PC. I would prefer not to store all of my content on my HTPC because then i will have to stream the data to the other media center in the house (standard def tv-xbmc) or back to my PC

I wrote a batch script with xcopy that seems to do the job ok for now. Anyone know of any free or open source utilities that will run as a windows service that will synchronize either with a windows share or with a ftp client?

Anyone have any thoughts that I may not have considered?