Multiple component hook up tv,dvr,dvd,blue ray

[bluesman]

Hi everyone,
I am new to this site. After looking it over I decided this seems to be a very knowledgeable group.

I have a Sony XBR-46 second generation high def tv.
I also have a Directv DVR HR20. I also have a Sony Dav-x1 home theatre system with dvd upscaling.
I would like to add a Sony Blue Ray High Def ( BDP-S300)DVD player to my system. I would then have the Sony TV hooked into the Directv HR-20 DVR and that is hooked into my DAV-X1 upscaling home theatre system. If anyone is familiar with the Sony Dav-X1 upscaling DVD player with subwoofer and 2 small speakers you know it has that RKSX1 audio cable that runs from my upscaling DVD player to the speakers.
The DAV-X1 uses a RK-SX1 audio cabling which is a 15 pin female connector on the back of the DAV-X1. I just purchased a Sony Blue Ray BDP-S300 player but it doesn't have the 15 pin female audio connector on the back to allow me to hook up my 3 speakers from the Sony Dav-X1 system.

Is there any way I can add the new Blue Ray DVD player in the chain of components and still receive optimum audio/blue ray video/audio and use my upscaling dvd player?

Any help would be greatly appreciated. If it can be done how would I wire everything? My tv has 2 HDMI connections but all other components only have 1 HDMI connections. But possibly I could use Fiber optic connections on some of the components to allow all of them to work.
Thanks,
Bluesman