Re-enable iTunes 4.0.1 music sharing.
Version:401(ok) is a quick and dirty hack to allow iTunes 4.0.1 to share musicbeyond your local network.
Operating System: Mac OS X
It redirects incoming connections on port 4689 to port 3689. Thisallows for the iTunes music sharing server normally run on port 3689(but with limited access), to be reached on port 4689 globally.
Thelocal network limitation in the iTunes sharing server is achieved bysending server responses with a low IP time-to-live. By doing a localport redirection, the server responses are sent with the normal TTL,and the "subnet" limitation is eliminated.