plz need your help

[Dody 84]

hi all
i need your help i have an old sony hi-fi iam using it with the dvd player and ps3 i want to make a surround sound and don't know how it have only 2 outputs for speakers
this is a picture of the hi-fi from the rear



i have 4 speakers
2 sony speakers
2 akai speakers

here is a picture of the sony and akai speakers





if u please help me iam in need of your help

thnx