Switching media server from XP to Vista

[EGOvoruhk]

I've got a media server, with a couple TB of data. I'm redoing some things on it, and I was thinking about upgrading the OS. I've got a few extra Vista licenses, and I was wondering if there is any reason I shouldn't move over to Vista. Mostly I use it to share media to a few PCs around the house, and some Xbox 360s, but I also use it as my downloading mule. Am I going to run into any complications? Is sharing/file transferring still an issue between different OSes?

Thanks in advance guys