From posts on this list, there seems to be a prevailing notion that to get your first MD set up (which requires a working orbiter) you need to install LinuxMCE as a hybrid. This is not entirely true, but not surprising as the better solution isn't exactly widely advertised... so for anyone who haven't heard about this yet:
What you want to use is the web orbiter, which in the interest of clarity was named "generic Proxy Orbiter" and which runs inside the equally-clearly-named "generic web device". In the admin interface of your core, click on "Show Devices Tree" -> "CORE" -> "Create Child Device". Select "Generic Web Device" from the Device Template menu, then click "Pick device template". Reload the router, then go to http://dcerouter/pluto-admin/weborbiter.php. Log in, select "Generic Web Device" from the Device menu, click "Submit", and you got an orbiter.
Be worn - it's a *very bad* orbiter. It's bad even in Pluto standards. But it works, mostly, at least well enough to get your MD set up.