Ssh to AppleTv (user: root, pass: alpine)

cd /Applications/AppleTV.app/Appliances (Enter)
ln -s /Applications/Lowtide.app/Appliances/Groovy.frappliance Groovy.frapliance (Enter)
exit
Restart Lowtide on NitoTv Settings or reboot AppleTv, now you should view and use your groovy