Ok Thank you! Changed the script, works as a charm!
sudo -u pi ssh [email protected] mplayer -noconsolecontrols http://icecast.vrtcdn.be/radio1-high.mp3 -volume 100 &> /dev/null

I have this script I want to execute through SSH. It works perfectly in terminal, but not in my script... What am I missing? return { on = { devices = { 'Radio' }, timer = { 'every 5 minutes' }, }, execute = function(domoticz, device) if domoticz.devices('Radio').state == 'Off' then os.execute ("ssh ...