Thanks Dark Mantis for the answer!
I double checked everything again and found that i connected the side speakers to the Rear jack.
So i changed the Jack pressed on every speaker and i heard the test sound.
Then i pressed again on the play all speakers and i hear the sound from my Front / Side / Cen / Sub.
But when i start to play music with Foobar / Media Player / Winamp i hear sound only from Front / Cen / Sub
The side speakers don't play any sound at all.
So i read the motherboard manual again and found the Dolby Theater function on the Windows sound panel.
I checked the Dolby function on and i hearing a sound from my Side speakers bu the sound clear its very quiet and
not in a full range.
I even tried to set the speakers to 7.1 and still no sound on side or rear only front is playing.
Before this motherboard i used Asus with Atom CPU and i have never had so problem with sound, but now i stuck
and i don't know what to do. everything i tried didn't work so far.
I even thought to buy Asus Sound Card to get same sound
I can upload print screen from the Sound Settings if it help!