Manual Uninstall

Delete Background Music.app from /Applications.
Delete Background Music Device.driver from /Library/Audio/Plug-Ins/HAL.
Pause apps that are playing audio, if you can.
Restart coreaudiod:

<sup>(Open /Applications/Utilities/Terminal.app and paste the following at the prompt.)</sup>
shell
```
sudo killall coreaudiod
```
or, if that fails
shell
```
sudo launchctl kickstart -kp system/com.apple.audio.coreaudiod
```
Go to the Sound section in System Settings and change your default output device at least once. (If you only have one device now, either use Audio MIDI Setup.app to create a temporary aggregate device, restart any audio apps that have stopped working or just restart your system.)

Troubleshooting

If you still have the Background Music audio device, try using Terminal.app to make sure you've deleted its files:

shell

sudo ls /Library/Audio/Plug-Ins/HAL

If you see Background Music Device.driver in the output of that command, use this command to actually delete it:

shell

sudo rm -rf "/Library/Audio/Plug-Ins/HAL/Background Music Device.driver"

Then restart coreaudiod again. If that still doesn't work, restart your computer. If that doesn't work, feel free to open an issue. Include the output of sudo ls /Library/Audio/Plug-Ins/HAL.

Optional

Delete BGMXPCHelper.xpc from /usr/local/libexec or possibly /Library/Application Support/Background Music.

Unregister BGMXPCHelper.

If you're using OS X 10.11 or later:

shell

sudo launchctl bootout system /Library/LaunchDaemons/com.bearisdriving.BGM.XPCHelper.plist

If you're using an earlier version of OS X:

shell

sudo launchctl unload /Library/LaunchDaemons/com.bearisdriving.BGM.XPCHelper.plist

Delete BGMXPCHelper's launchd.plist.

shell

sudo rm /Library/LaunchDaemons/com.bearisdriving.BGM.XPCHelper.plist

Delete BGMXPCHelper's user and group.

shell

sudo dscl . -delete /Users/_BGMXPCHelper
sudo dscl . -delete /Groups/_BGMXPCHelper