Streaming string question

[drewdb]

I'm new to vlc in c# and have worked out how to make the string to receive a stream but i can't work out how to form the string to include the file that i want to stream.

among many, i've tried things like:

string MRL = "filepath\\Coldplay - Yellow.mpg --sout #duplicate{dst=display,dst=udp{mux=ts,dst=239.0.0.1:1234}}";
also with transcoding. i just can't work out where to put the filename.

any help please i'm so close to being able to use vlc in my project.