All commands I used were:
wget -O /opt/musicbox/setsound.sh https://raw.githubusercontent.com/pimusicbox/pimusicbox/develop/filechanges/opt/musicbox/setsound.sh
apt-get update && apt-get install --yes rpi-update
PRUNE_MODULES=1 SKIP_WARNING=1 rpi-update
reboot
On reboot Allo Boss was available in websettings.
Full post here: