I've got it, use it every day, and I love it.. I used to be a hardcore Winamp fan, but WMP does everything just as well IMO. Plus it's pretty handy that you can minimize it and have the little controls sitting in the taskbar.
I haven't run into any problems at all with digital rights management... in fact, i'm pretty sure you can even disable it. As for being resource hungry, in my experience Winamp3 is far worse, and contains a lot more bugs.