Uninstalling Mersive's Solstice Audio Driver from MacOS Mojave
This was a minor annoyance, but since my Google searches were particularly unfruitful, I figured I'd make a note of it. Our WeWork uses the Mersive Solstice client for broadcasting our devices to the meeting room televisions. It has the option to install its own audio driver to try to mirror the audio on its own.
The client's built-in audio driver is called "Desktop Audio Streaming Device" and it shows up as an output and an input device. It also completely failed to work at all. The only way I managed to get sound on to the TV was by using AirPlay after connecting with the Solstice client - basically using it as little as possible.
Uninstalling audio drivers is apparently something weird in OS X - the device was listed in the Audio Midi Setup built-in macOS app, but couldn't be uninstalled from the app. Some wild googling directed me to /Library/Audio/Plug-Ins/HAL/, or /Library/Preferences, or their ~/Library counterparts. In the end, it was a kext in /System/Library/Extensions: SolsticeAudioDevice.kext. Trashing that file and restarting the computer fixed the issue.
