How do I start using Vorbis Codec?

>     With the help of my friend, I opened and built the vorbisfile project in 
VisualStudio successfully. We had to change some directory paths. It would have 
been better, if clear instructions were given how to use and build the project 
in Visual Studio. Also, we did not know how to run the code by giving the ogg 
file as input. After some trail and error, we were successful. Once again, 
clear instructions on the same would have helped.

As you have now successfully compiled Vorbis in Visual Studio and got the code 
to run, why don't you write it all up and let others know what the pitfalls 
are?  You are in the best position to give some clear instructions as you have 
done it.  The other gurus may have never used evil Visual Studio and won't want 
to get their hands dirty.

This is what open source stuff is all about.