Windows 7: 5.1 surround doesn't work properly in all apps .

Hi.

The strand thing that it's working perfectly in AIMP3 , but when I'm playing a movie in classic media player or YT video, only the center and right speakers are working . The others have this weeird , super low delayed sound , barely Noticeable .




This is my motherboard , maybe I've downloaded wrong drivers or something, but I'm pretty sure that before reinstalling my Windows 7, I had this user friendly configuration tweak with sound options . Now it seems to be gone .
http://www.asus.com/Motherboards/AMD_AM3/M4A88TM/

checked with driver detective =

it says that "high def audio device is out of date"

BUT

ive downloaded from the asus website the drivers!!!

deleted, installed again the drivers , and i had this problem in aimp too, but after configuring the audio device to 5.1 it began to work great in aimp , but again , nowhere else .

can somebody help me please?
YT videos working only on right and middle speakers !

whats wrong
?

i need windows 7 driver for creative sb0220 & i can not find it any where,,and windows 7 does not detect my sound card as well ,,can some 1 please help me.....