Well, that's funny. I wanted to switch back to explorer as shell and when the os resumed from hibernation there was no pop on the speakers. Can someone explain this to me ? I didn't change ANYTHING. No wiring, no settings, nothing. Well, it's gone and I'm happy now. Sad thing is that I don't know what fixed the problem, and that annoys me :(.
The PC is directly connected to the AMP (as before when it was still under the passenger seat and working correctly.
Thanks to you for trying to help.