From your other thread about subwoofers, it looks like you have a bunch of coax cables (either RG-59 or RG6, hard to tell) and a few pair of 16/2 or 16/4 speaker wires (white jacket).
As Jaxvon said, you can terminte any of those coax cables with RCA connectors or terminate them with the standard F-pin connector and use male F-pin to female RCA adapters.
If you have all the a/v equipment in a closet, I would assume all audio connections go to a receiver in that closet. Therefore, you have no need to get the audio to the TV itself. If all the equipment is in the same location, you can connect everything directly and the only cable run to the TV will be for video. If the other non-visible wires in the picture are indeed terminated with RCA connectors for component video, use them for video; otherwise terminate the coax with RCA and use those.