emp

Hi i just bout myself creative inspire 4.1 speakers along with a sound blaster 4.1 digital. I installed the card, and the drivers, but i've been having a prob. when i watch movies/ listen to .mp3 once in a whine it jsut jumps 2-6 seconds forward. no idea why. i tried installing the newest drivers for the card but it did not fix the problem. can anyone help ?