Bang yeah! That's what I want too! I started writing something to do that in VB, but I really just dug myself a hole. I hope an experienced person out there has done it though
Basically I had two listboxes showing the contents of both the local, and remote drives. There was a sync button to make both drives identical (or selected folders ie mp3's), or you could update only higher quality songs (in that say you had a net 128k file and you had just got a CD quality version, this would allow you to overwite the lower quality song).
I had it all look'n pretty but the code for what I wanted to do was beyond me
I hope this gives someone some ideas though.