5.1 Reciever Upconverting How Can I Setup My Ps3 Hdtv And Surround Sound All Together When My 5.1 Doesnt Have Optical Input?

How can I setup my ps3 hdtv and surround sound all together when my 5.1 doesnt have optical input? - 5.1 reciever upconverting

HDTV with 3 HDMI 5.1 receiver has 1 HDMI input. What can I do? Is there an optical fiber as a "catalyst" for the recipient, not to do too?