You should try using web orbiters instead of XP orbiters.
Here are the steps for creating a new web orbiter:
From Web-Admin page:
1. Go to Advanced -> Configuration -> Devices
2. Press "Add a top Level Device" . A a description like "Web Orbiter"
3.Press "Pick Device Template" . An Pop-Up Windows will appear.
4.Select from the Device Template drop-down the "Generic Web Device" and press "Pick Device Template"
5.After the new Device is created, expand it by pressing the "+" sign and click on the "Generic Proxy Orbiter"
6.Select the room for this orbiter, generally the Core room will be a good choice, then press SAVE
7.Do a "Quick Router Reload" from Wizard -> Restart
8.Type in the address bar of the Browser : http://LinuxMCE_ip/pluto-admin/weborbiter.php