SIMPLE pROJECT: C# about SOUND LEVEL METER using VISUAL ST

Question

Hello there,

 

I would like to get a link or some explanation step by step about, how I may create a SOUND LEVER METER(For controling my music playlist with an app like this).

I need to use C#, Visual studion and a card: velleman k8055.

Thank you all for your help!