Currently there is no easy way from within Windows - for example, an icon in the task bar - to tell if a server is running. The simplest way to find out is to start Muse and see if the online/offline button in the task bar says you are online. The tooltip you see when you pass your mouse pointer over it will say "Shared Mode" if you are online and "Offline mode" if you are not. Another more technical way is to start the Windows Task Manager and look for an entry called mcc.exe in the process list. If one exists and the main Muse Lite client is not running (also called mcc.exe) then this will be a Muse server.