Any recording software (e.g. Audacity, etc.) should have the ability to select the recording input. This is not the main problem, like RicardoTM also mentioned, but finding one that can be controlled through a script of some sort (e.g. batch, PowerShell, python, AutoIt, AutoHotKey, etc.) that could be then executed via a RunCommand measure by a Rainmeter skin. Why don't you try to find one yourself and come back here for advice on the Rainmeter part? For example, although code is not provided, see this similar AutoIt thread from... 2005:What are some potential methods or tools for creating a macro or automation to switch the recording device to the stereo mix, play system sounds as if it were a microphone, and then switch back to the original microphone device?
https://www.autoitscript.com/forum/topic/9330-recording-control/
Statistics: Posted by Yincognito — Today, 9:49 am