5.1-TV

Hey guys.... I have a Videocon Smart TV. I want to connect my 5.1 speakers to it.. But can't seem to get it to work. My TV has a RF in, SPDIF in, HDMI(ARC), AV/YPbPr in. I don't know much about these cables and don't know exactly which goes to which. And my 5.1 speakers have AUX input ports...