Sync itunes lib between 2 computers

[Cecret]

I have a laptop and a desktop and I use them both to buy music and import cd's. Is there any easy way to keep my libraries in sync on both machines?

[parenthesis]

If you have two macs, you can use Apple's Backup (with a .Mac membership) or you could turn on FTP on one (or possibly both) computer and just manually sync them by dragging the iTunes Music folder and hitting Don't Overwrite.

I have a desktop running Win XP and an iBook, and I use both methods.

I don't know any "automatic" methods other than .Mac and Backup.