Raspberri pi2 problem audio jack

Hi, I’m using my raspberry pi 2 as a mediacenter thanks to OSMC, I’m using an HDMI cable for connecting it to my monitor which hasn’t speakers. I’ve tried to connect my speaker and my headphone to the raspberry but it doesn’t function, do you know how could I fix it?
P.S. english is not my first language, so sorry for my grammar

Did you change the audio output under Settings -> System -> Audio?

No, what I have to do?

Well I guess change from HDMI to Analogue :wink:

I’m gonna try it, I’ll write you later. Thanks