nzb is the Qt 4 based graphical nzb client.
nzb is an easy to use nzb client and provides a stream capability to your favourite media player. No need to download media files to play them. With enough bandwidth DVD quality videos can be streamed directly.
The media player option (under Output) is the application that will receive streams over stdin or via the internal HTTP server. Insert you favourite media player here. For Windows I recommend installing VLC and using the following:
as the media player and the streaming HTTP server enabled.
On Linux you can use pretty much any media player via stdin (streaming HTTP disabled), e.g.:
mplayer -vo xv -ao alsa -vf pp=lb -