Piezo makes it easy to record audio from voice chat (or VoIP) applications, like Skype and FaceTime. Read this article for full details.
Voice Chat Recordings
Piezo works to automatically capture all portions of audio from recognized voice chat applications (see the full list below). Voice chat recordings will contain both halves of your conversation, with your local audio saved on the left channel of the recordings, while the audio from the remote party is saved to the right channel.
More Control Over Voice Chat Recording
While Piezo makes it easy to record both halves of a voice chat, it does not offer advanced configuration options. For more power and customization with your voice chat recordings, check out Audio Hijack.
With the Advanced settings in Audio Hijack's Application Source blocks, you can optionally mix the audio to both channels, or turn off your local audio so the recording contains only the remote audio. As well, Audio Hijack makes it possible to record voice chat that takes place in web browsers, such as Google Hangouts and Facebook Chat.
Read more details on using Audio Hijack to record voice chat in this article.
Addendum: Voice Chat Applications Supported by Piezo
The following is a complete list of applications that Piezo supports for voice chat recording. This list is frequently updated, as support for more applications is added.
Skype for Business