"Show Package Contents" of (the original) iTunes 4. Open the following
file(s) in Safari:
There you will see a note from the original help file: "You can also share
your music with a computer that is not in the same subnet as you by setting
up the other computer to look for shared music at your computer's IP
...where you will see: "To see the shared music on a computer that is not in
the same network subnet as your computer, choose Advanced > "Connect to
Shared Music," then enter the IP address for the computer."