Late to the party, but Musicbee is the best out there for Windows. For ANY platform in fact, but it's only available on Windows.
VLC is the popular choice, but in some ways, it kinda sucks. Musicbee is beautiful, configurable, has great library management, and...well, it's just really good.
I've been using it for a decade or so. Now that I've switched full time to Linux, I'm suffering withdrawal.