One-way audio streaming via proxy

1. An audio stream (capture from a microphone) will be transmitted from PC "A" (Sender). 2. Stream will be transmitted to server "S" (to avoid nat problems) (Proxy-Server) 3. PC "B" will receive it from server "S" and immediately play it, save it if necessary (Receiver). Nothing is stored on the server. The Sender is identified by ID (number from 0 to 99999). The Receiver must specify the correct password (common for all senders) and the sender's ID to listen to the audio-stream. No need to send any commands to Proxy-Server/Sender from the Receiver. Implement in plain C# or VB.NET. Windows, of course. You can use ASP.NET if you want. You can use NAudio for audio capturing. Do not use Silverlight, WebRTC, SignalR or any other framework (discuss it with me first). Requirements From you, we need a working Visual Studio solution (source), with three projects: 1) Proxy Server, (console application). parameters: ports and password. 2) Sender (Winforms). Parameters: - source - microphone (and audio-file if you want), - Sender ID - Proxy Password - Proxy Server IP:Port - start-stop "recording" button 3) Receiver (Winforms). Parameters: - Sound volume - Sender ID - Proxy Password - Proxy Server IP:Port - Play-Stop buton. It must work for many Sender-Receiver (Projects #2, #3) at one Proxy (Project #1). Proxy ports shouldnt change (one ports for all clients).