I prefer just paying the $20 for a legit version from a uni. And use on as many computers as you want. Then when it says key is up, just call M$ and they'll activate it no questions asked.
I don't think anything should be free just cause people are going to download it illegally anyway. I think almost all industries are moving in the correct path. With iTunes, and Amazon, digital music is getting very cheap. Sell more for less is a good sales tactic. If I want one song I don't have to buy a CD anymore, just pay the $.99.
Furthermore, with all the push for digital media in the living room, cheap movies and shows are becoming near perfect price. We have the subscription side (ex. Netflix) where you can use as much as you want for a fixed price. Content at the current time is limited more, but that should change with time as Netflix is moving away from a DVD sales company and strictly streaming.
Then you have the pay for the content side (ex. iTunes). Where you want to watch the old season of House, all you have to do is pay $.99 a episode. This is also pretty great as if you want to watch a show thats not on Netflix or Hulu you can for a reasonable price. they also have a system like they do with CD's where if you buy the whole season you get a discount.
Audio books I really don't care about. I've only got a couple audio books and if I remember they were cheap (like $5).
You can't stop piracy. But one of the main reason people pirate stuff is the price. Offer stuff at a cheaper price and you'll help slow it down. You'll never stop it, but will help the impulse buy in which people see that Netflix and such only cost $8 a month and they get free movies. The company gets money from a source that odds are wouldn't of watched there content. Therefore should take a eye off piracy.
(All this is coming from a guy who pirates a lot, but is slowing down. Haven't pirated a movie in a long time thanks to Netflix, Hulu and more. But I still pirate music as I'm cheap and for the amount I want, I'd be broke. But I do buy cd's of artists I want to support.)