I think the solution to your issue is to disable the Bonjour service as this is how the remote app talks to itunes.
1 Go to Utilities
2 Open terminal
3 Then enter the code here
sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist
now the remote app will not be able to see your itunes, this will also disable other computers on you network seeing you so easily
4: At some point you may want to turn this back on for file sharing or some other reason so you would enter this in to terminal
sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist
5: If you are using windows have a look at this link
ttp://www.raymond.cc/blog/archives/2008/02/10/how-to-uninstall-or-remove-bonjour-mdnsresponderexe/
Hope this helps