5.1 surround output

[gameornothingelse]

hi i have an lg dh4420s 5.1 Ch DVD Home Theater,
i was thinking f buying ps4 then connect it to the surround system.but unfortunetly there is no optical port provided in the system . can anybody tell me how to get 5.1 surrond audio (not just ps4 also from my tv).no hdmi in port is available.
http://www.lg.com/uk/home-cinema-systems/lg-DH4220S-home-cinema-system

 

[Alabalcho]

You simply can't - these cheap "home theater in a box" are not designed to eat the lunch of proper AV receivers.