I know it's on beta. I love the OS so far, tons of great features, and the minimal system resources it uses is AWESOME. I prefer it to Red Hat Linux which is my main OS *Red Hat's headquarters are on our campus, so it makes it great to have free operating systems, and it's good anyway*
All the blue screens are all driver problems, so I'm not too concerned. What gets me is it was fine for probably 2 weeks, and with no hardware changes, it decided to bluescreen after about 20 minutes or so after reboot. I'm still excited for the full release though, going to blow vista out of the water.
Anyway back to subject.
I use Windows Media Player/Center almost exclusively now. I could never stand itunes, and had problems with it's proprietary file types, and didn't like the amount of system resources it takes up. WMP is a much better program IMHO, and since it's compatible with almost every mp3 player on the market, it makes sense to use it. Much more user friendly though.
I do use Mythdora's media player for my linux machine, but well, Windows and Linux don't like eachother much, so not much of a choice there.