First let’s start at the end. If you are looking for free software to record Skype voice conversations, please skip to the bottom of this page and download the attached file. It contains a Windows Installer msi file and should install a recorder on your machine.

Skype uses a public API to listen and transmit messages to all programs on your computer. Messages are being transmitted via the native windows API and will require us to use some external method calls.
In this article we are going to build a WPF client that will communicate with Skype, detect voice calls, redirect the incoming and outgoing streams into files and finally, create a complete conversation file.

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