Read step by step instructions here. I’m about to go try it out myself.
Later: worked like a charm, and took roughly a half hour. There’s an ongoing progress report, which is a useful feature. I, as a backup fanatic, immediately compressed the “Backup” directory that was created in the Radio directory, and added it to the list of files to be uploaded to my offsite backup drive. This is of course something that I should automate via AppleScript. I’m hoping this is a sign of actual interest in the product from Userland.