In order to use the new xPilot client, download the latest version. If you already have xPilot installed, make sure you update to the latest version when prompted. You do not need to download anything else.
The first time you run the updated version of xPilot, open settings and calibrate your microphone under the Audio Configuration menu. When talking, the bar should be bouncing into the green band. If it does not, increase or decrease the mic Volume using the mic Volume slider.
Don't forget to assign a Push-to-talk key!
For xPilot to work you need to first remove any other multiplayer plugins (e.g. xSquawkbox or XSwiftbus)
Make sure you have a flight loaded before you attempt to connect to the network.
You can find the xPilot Manual here written by the developer.
System Requirements: Windows 7 or Above & .NET 4.7.2