This Plugin lets you stream music files to your mpd that are not in your database.
How it works: Mserver is compiled using the libmicrohttp library, which enables applications to function as a minimal webserver. As MPD is perfectly capable of playing Streams out of the box, you get a list of streams in your playback queue after adding the files.
This plugin is located on repo.or.cz here
To get a checkout:
git clone git://repo.or.cz/gmpc-mserver.git