some fuse related probs!

on the skoda, i had a problem with the cd player not working, took the fuse out and it was fine, put it back and it worked?

it did it again, so i done the same (actually its done it 3 times now) only now my electric windows no longer work, was just the drivers side now its the passengers side too, tried the taking the fuse out and putting it in alot of times but it doesnt work, any ideas before i get a car electrician to look at it?

For the windows could possibly be the wires from the door to the body. Take a look in the rubber flexi part near the hinges that the wires go through. Often break up through the contstant opening/closing of doors.