ljubisa24, welcome to the forums.
A few things,
I set my speakers settings to 5.1 tested and all speakers work >.< but when i play some music i get only stereo
Good reason for that; unless the audio file is DVD-A, it is only going to be in stereo without some kind of upmixing involved.
2. EAX. Eax has nothing to do with whether something plays ion stereo or 5.1, it is exactly what its name implies, "environmental audio extensions", Environmental audio extensions - Wikipedia, the free encyclopedia
What ever EAX driver pack i tried to install doesnt work properly (P17X support pack 2.0 and 1.6 ment for my card doesnt work since Audio console doesnt open up) and RobertM (useless drivers since i get Blue Screen from those) and kXproject ( poor sound ).
In the case of the P17x pack it probably has something to do with the driver you installed through Windows Update. It may be the same driver version as what is availab;e from Creative at the moment, but think you will find that that is all it is; just the driver. The one from Creative should also have the latest Audio Console in it.
As far as the PAX drivers go, let's just say I'll keep my opinion of them to myself. If you saw what his supposed "tweaks" were, you would realize they don't do anything.
The Kx drivers were never meant for your card, so no real surprise there that they don't work properly.
With all that out of the way I would start with uninstalling anything you can find in Programs and Features relating to Creative, as well as uninstalling the card through Device Manager. Then boot to Safe Mode and use this, Guru3D - Driver Sweeper (no installer) download from Guru3D.com
to clean up any remnants. Once that is all done try using just the P17X pack and see if that will get the drivers and included apps working.