Hi,
After I've tested some several UPnP servers on my WHS2008 R2 server to stream content to my Beoplay V1. I found the fastest and most reliable one to be a free one: UMS (stands for Universal Media Server) for use with the in-build media player.
There is although some configuration needed to make it fluent for the media player.
In case anybody is interested in trying UMS, I have made a configuration file and png picture for the Beoplay V1. All for free offcourse 😁
Just trow me some email, and I deliver it to you.
Best regards, Chris