problem with logitech x-530 speakers

hello i recently purchased these speakers. after installing them i found only the base and two front speakers were playing. thecenter and two back were not. i have connected all the wires and check the speakers worked which they do i am just not getting any sound threw them.
is there a driver i need to download?
i am not using a sound card but have a modern mother board.
asus M2R32-MVP Crossfire (Socket AM2) PCI-Express DDR2 Motherboard

i could not find the driver on logitechs website
thansk for your help

no wmp and tired a video in vlc

You will not use all of the speakers unless the audio source requires it, so you need a 5.1 audio source to utilise all of the speakers. You may need a driver to do this. Also to get the full potential out of your sound you could invest in a sound card. If you do I recommend X-fi.

make sure your sound is set up for a 5.1 output, then play an actual surround sound file (either from a DVD or download some sort of surround sound clip online). Some sound cards (most these days) will allow you to test each channel/speaker individually so try and look in the sound card settings too.

i have plenty of 5.1 files myself but they are all very large files

if you have any games, try them out (make sure once again they are set to 5.1)

if you have a matrix button on your speaker controller press that it makes 2 channel in to 5.1, i have the x-540s and thats how it is on them

thanks for all the help.
having issues trying to find a working driver update at the moment. it seems to have removed the old one and not put the new one on.
ill try to find a driver then check games and sound settings like you guys sujested
thanks

ok so i have sprted my sound driver back out had lost thehigh deinition audio driver.
does any one know how i find the options to set it to 5.1 if these exist. i have
ATI function driver for high definition audio- ati aa01
and a sound max intrgrated digital HD audio if that helps.
thanks if not i may just have to buy a sound card
thanks

hello again.

i have recenltly purchased a sound blaster audigy 7.1 sound card and fitted and installed it and added all the updates for it.

i have also set it to 5.1 in all the settings but im still only getting sound out of my left and right front speakers,

all the speakers definatly work as iv swapped wires round to check.
does any one have any ideas why this might be happening

thanks

only other thing i can suggest is upgrading to the x-540s which are an improved model of the x-530s and they have a matrix button that allows you to turn 2 channel audio into 5.1 with the press of a button

iv only just bought these speakers so not really too keen on buy more.
now when i plug in the speakers into the mobo i get a message poping up asking what colour jack i plugged into each soccet for different speaker groups but i now get no sound out of them if thre in the mobo.
and when back inthe sound card i only get 2.1

ok so iv managed to get music to play threw all the speakers found a button to enable cmss 3d sound.

on the surround sound demo im still geting the voices for each speaker out of my front speakers only.

i also have jittery sound when i play avi videos on my computer

thanks for the help so far huys