5.1 Audio not working in WMP after moving.

I recently moved into my own apartment and therefore needed to disconnect all my cables etc from my computer.

upon reconnecting, my 5.1 was not working with windows media player when playing music, videos etc.

I have onboard 7.1 realtek AC97 and a 5.1 Logitech speaker system. I've heard that music normally comes out of just 2 speakers, but it has always come out of all five before I moved without any settings being changed on my system.

My speakers are set to 5.1 in Windows and when I test them sound comes out of all of them.

So my question is why would 5.1 only work during the configuration test, but not in Windows Media Player and games etc.

I've tried all possible ways of plugging in the 3 cables to the back of my motherboard, but only one seems to work for the 5.1 test.

Any ideas?