* Download & Install the "AudioCast" Audio Driver
To send your Mac's audio to other devices, please download and install our free "AudioCast" audio driver. After the installation, please restart all applications playing audio or video, such as QuickTime, VLC, iTunes, Safari, and Chrome.
After the installation, please click the "Include System Audio" and then select the device to start mirroring.
Please note that if the app got terminated incorrectly, such as by "Force Quit", while streaming live audio to other devices, it's possible that the audio wouldn't be restored to your Mac or headphone. You can select your current audio output to your Mac in System Preference -> Sound -> Output tab.