The app for passing audio between applications

soundflower extensionSoundflower works as a system extension for OS X. With its help, applications can pass audio easily to other applications on your Mac. Soundflower has a simple and intuitive design: it is presented in the form of an audio device with the help of which audio apps can send or receive audio without the need for any extra support.

Soundflower is available in the open source, free of charge; it is compatible with PPC and Mac Intel computers.

Here’s an example: if you’d like to pass audio from iTunes to MSP/Max, you should go to System Preferences and appoint Soundflower (2ch) as the sound output device inside the panel of Sound. Next, inside the Window of DSP Status in MSP/Max appoint Core Soundflower (2ch) as the device of input. From now on, all iTunes output will be sent to the location MSP/Max’s abc~ object.

Version: 2.0b2

Latest Updates

  • After the update to the latest version, Soundflower requires 64-bit Intel processor, running on OS X 10.10 and later.

Price: Free

Developer: Matt Ingalls


  • Intel, 64-bit processor
  • OS X 10.10 or later