I am trying to figure out how to convert my 3 3.5 mm analog wires to an optical. my setup is the cheap little 5.1 set by logitech. meant for computers obviously. My comp has no optical audio port and i just got a ps4 i want to be able to use true 5.1 with my ps4 for blu ray playback and gaming somehow. I was wondering if there's some kind of conversion for an otical out to splice into those 3 analog cables or if theres a way to use my comp like a reciever. currently I'm using the traditional 3.5 mm headphone patch cord from my ps4 controller to an audio in on my pc. but that just uses speaker fill it's not actual 5.1. thoughts? the set of Logitech speakers i'm using is the Z506 set.