macOS client audio settings

To allow the AirSync Sender application to share both video and audio, users must install the macOS virtual audio driver before sharing their screen. 

Supported drivers

You can use the default macOS virtual audio driver, or use one of the following virtual drivers:

• VB-Audio: https://vb-audio.com/Cable/
• Blackhole: https://github.com/ExistentialAudio/BlackHole
• Loopback: https://rogueamoeba.com/loopback/

Installation steps 

The following steps use the Blackhole app as an example.

1. Download the Blackhole macOS installation file (e.g. BlackHole2ch.v0.5.0.pkg).
2. Close all running audio applications.
3. Click on the installation file. 
4. Follow the steps to complete the installation.
5. Switch over to the AirSync Sender application and start using it to share your screen.

After the driver is installed, start a cast to prompt the macOS AirSync sender to detect the driver and automatically adjust the device's audio output settings. There is no need to configure it manually. Once the cast ends, the sender auto-reverts back to the previous audio output settings.

If there is no audio driver installed, the sender displays a notification message on the initial view and select screen view. You can still share your screen but without audio.