Proberly a really dumb question but need help

[Factionparadox]

Hi

this is no doubt a really doubt question but im really new to all of this so please bare with me

Right im now the proud owner of a Sony BDP S300 or "tank" for short

now on all my past DVD players i connected my 5.1 speakers using the red,white and yellow cables and the sound has always been great.

today i recieved Band of Brothers on blu ray so naturally i decided to connect my 5.1 set up to the BD player. When i went to connect my set up to the player i noticed i just didnt have enough wires because as well as the red,white and yellow there was a black too these are for the woofer etc. I tried watching band of brothers anyway and while i could hear all the action i couldnt hear certain people talking on screen.

now since iv never had this problem before what do i need to do to get the full 5.1? do i need a cable that has red,white,yellow and black on it?