Way 1 – Remove Soundflowerbed manually
First of all, you have to quit Soundflowerbed.
Make a right click on Soundflowerbed and select Quit Soundflowerbed.
Next. Go to the Applications folder and find there Soundflowerbed and move it to the Trash.
Then go to: Macintosh Hd > private > var > db > receipts
Found there all files that contain soundflowerbed in their names and delete them.
Reboot your Mac and Soundflowerbed will be uninstalled completely from your Mac.
Way 2 – Uninstall Soundflowerbed using App Cleaner
App Cleaner is an advanced tool for App removal that allows you to remove an app completely with all its service files in several clicks.