Anyone who's really been paying attention to the recent things coming through Windows Update knows that an update to the Windows Media Player 11 runtime recently has been released (say, wasn't patch Tuesday a few days ago?). Anyone who's been wondering what this update does need not look much further. There was apparently a problem with the way Windows Media Player "metered" the times a song bought over subscription services was put on a digital device. This led to all sorts of issues, such as entire music stores not working (it's not fun, trust me), and sometimes outright failures of Windows Media Player library to MP3 player transfers. You can read the full details from Microsoft as to how exactly they fixed this problem here. Or, you could just be glad that if you go through the trouble of paying for your music, you can rest assured you'll actually be allowed to listen to it.