Lol everyone. This might sound a bit of a silly question but here goes anyway. "I brought a new PC last week and 5.1 speakers which I sourced seperately from the PC. The motherboard has an onboard sound card 6.1. I can only see 3 phono jacks at the back of the PC. Q. How do I connect the PC (3 phonos 3.5mm jacks to the back of the sub which powers the speakers. The sub has 3 rows of double phonos. How do I connect the sub to the PC as I will need an adaptor or lead which has two audio phones for the sub and at the other end of the lead it will need a single 3.5mm jack. Please someone must know what to do.