yeahhh ...thats what i thought..having sound on the center..
well, nadavi123, if you're using Windows, double click on the 'speaker icon' and find 'wave out' column. you could adjust the balance there and still yet, i dont think i have answered his question correctly...

how many speakers do u have? it sounds like u have more than 2...how about unplugged all speakers and having just one. that'd be center