Sometimes the AmahiTunes server may not appear in iTunes on XP/Vista machines.
One solution is to restart the "Bonjour Service" - this is sometimes stopped by Apple's installers. [http://support.apple.com/kb/TS1567?viewlocale=en_US| Details here].
For new users and you have the latest version of Itunes. To see the amahitunes in the sidebar in itunes. Go to your Preferences under itunes, then to sharing tab then click to tell itunes to look for shared libraries
= Related =
[[Using ssh to listen to Amahitunes]]