SyncToy

There are a bunch of ways to sync files from a Windows system to another device. I've learned this because I have an MP3 player and I hate using iTunes. There's xcopy, robocopy, and a plethora of UNIX-friendly utilities like running "cp -a" or rsync with Cygwin. Tonight, I've found another:

SyncToy: a free powertoy download for file synchronization

I'm not sure how well it will work, but it does seem to get the job done. I'll know more only after using it for a while.