C# Winform Naudio Update

Hi, Budget is 50 dollars. I have a Winform application based on NAudio which records audio playing on computer, audio from mic, as well as audio from compute and mic. I need the updates at the below link. [login to view URL] Budget is fixed. I own the rights to the current source code as well as the updated code. You should not share the source code with anyone. Once the project is completed, you should give me the updated source code. Thanks,