Version 3.1.1 was part of the "3.x" generation, which introduced several refinements over older versions:
: Quickly toggle between different output, input, and sound effect devices. SoundSource 3.1.1
SoundSource 3.1.1 is a legacy version of the macOS audio control utility developed by Rogue Amoeba . Released in late 2018, this specific update was primarily a maintenance release focused on compatibility with and improving resampled audio quality. Core Functionality Version 3
As a menu bar application, SoundSource provides immediate access to your Mac's audio settings without requiring the System Settings app. Its primary capabilities include: SoundSource 3.1.1
: Adjust the volume levels of individual apps independently, or redirect audio from a specific app (like Spotify) to a different output device than the rest of the system.