Hi, I checked everything to make sure the game installed properly, passed integrity checkall dirivers up to date, tried reinstalling, but I still get no sound until the main menu appears and then when I start a new game there is no sound with the opening scene. Can't think of anything else to try. (all my other games work fine).

System specs?

Win7 64 bit Home Ed. SP1
Core 2 duo @ 3.45
8Gb ram
X-FI extreme gamer
GTx 580 1.5 Gb ram

Also, all drivers and DirectX up to date.
Plus, if I click on the files in the video folder, they work.

EDIT: for some reason I had to reinstall directx for a second time, I just did this yesterday, but when I redownloaded it and reinstalled it, this time everything is working again.