Hi frengo,
i really like to help but you also have to do a bit homework.
RuneAudio is based on ArchLinux which uses systemd to start services at boot.
starting a service:
systemctl start openvpn@client1.service
checking the state:
systemctl status openvpn@client1.service
enabling at boot:
systemctl enable openvpn@client1.service
Frank