Mac Audio Out not working

I just bought and downloaded latest version

I’m trying to setup Audio Playlists. But I cannot get any audio output. Input is working.

I have followed Mac Instructions with Soundflower and it is installed correctly.

However when I set up the new Multi-Output-Device in the MIDI controller it seems to allow no Volume.
When I try to press increase volume on my keyboard I get No Volume display - stuck on mute.

Anyone? thanks for the help.