Musicbrainz Virtualbox and Headphones

So I am setting up musicbrainz using the ova file on my Debian box and have imported as follows

vboxmanage import --vsys 0 --unit 7 --disk /mnt/mythtv/musicbrainz/musicbrainz-disk1.vmdk --unit 8 --disk /mnt/mythtv/musicbrainz/musicbrainz-disk2.vmdk musicbrainz-server-2017-09-07.ova

I see it is creating 2 hard disk images

7: Hard disk image: source image=musicbrainz-server-2017-09-07-disk1.vmdk, target path=/mnt/mythtv/musicbrainz/musicbrainz-disk1.vmdk, controller=6;channel=1 8: Hard disk image: source image=musicbrainz-server-2017-09-07-disk2.vmdk, target path=/mnt/mythtv/musicbrainz/musicbrainz-disk2.vmdk, controller=6;channel=0

I start it as follows:

VBoxManage startvm musicbrainz-vm --type headless

I will be using Headphones. How do I point Headphones to this virtualbox musicbrainz server?

I see I am able to access it via ssh using

ssh -p 2222 vagrant@localhost

Is it a simple case of saying to Headphones that Musicbrainz server is on http://localhost:2222?

The web service should be accessible on http://localhost:5000/