Hello
This is only some rough guidlines you can follow, as i have not worked with this spesific player before.
You need to connect a RCA cable from the tv(Sound) output. Connect the other end of the RCA cable to the AUX input on your Sony system. Now, all you need to do is to change the input setting on the sony system to AUX, you will be able to hear the TV trough the system.
the RCA cables look like this:
The coulor is of no matter, it is only coloured to ease the use. The RCA connector points on your TV will have the same colour. Remember to plug in the RCA cables into te sound output on the TV and into the AUX input on the Sony player.
Really hope this can be of help.
Kind regards
Andrea