"Wow, nice 'skips' in the middle of the song. Did Last.FM download it from a torrent or what? "
do you really think Last.fm buys CD's??? Of course they collect music from the internet and then offer a payed service to listen to it. You gotta be naive to imagine that they have enough money to buy every song that they play through their radio. They may pay royalties or something, but even that would be far fetched.