Connecting any computer to a TV without VGA, DVI, or HDMI inputs is a challenge, and will likely be fairly expensive.
You'll need an adaptor that converts mini-DisplayPort (mDP) to VGA, such as the Apple one available at the Apple store, or a complete cable solution like the one
HERE. Then, you'll need a converter box like
THIS one to convert from VGA to either RCA or S-Video. Then you can connect to the TV. Beware, the picture quality will likely not be stunning.
In terms of audio, any
1/8" to RCA adaptor will work just fine.
--Travis
Message was edited by: Travis A. -- I failed to read that you have a "new" MBP. Changed some info.