This is such a major, general issue that as far as I know most PC players experience. As mentioned above there are workarounds, but it becomes very tedious to constantly change the volume of your computer before starting the game, and then changing it back when closing the game. If we're going to play Skyrim for a long time, it will become even more tedious.
This is why I made this thread. Bethesda are you aware of this? Why hasn't this been fixed? It doesn't sound like that hard thing to do and that much to ask for... to simply have a normal game volume, not 500% lower than everything else on your computer.
Betheda, FIX THE LOW SOUND.