You mentioned RCA but the full make and model information for the Bluray player and TV would help.
Howver, take a look at the connections available on each and use the following sites to determine what options you have.
http
/www.diyaudioandvideo.com/TV/WiringDiagram/
http
/www.ceaconnectionsguide.com/
Also look at User Manuals/Guides to help map out the cable connections you need.