One minor annoyance with Windows Media Player is that it assumes I don't own any of my music.  I usually use WinAmp but thought I'd see how well WMP11 Beta 2 was coming along and I noticed that in the List pane of Now Playing, when you hover your mouse over the blue arrow in the top-right it offers up a "Buy" button.  You know, for when you want to rebuy the same song over and over and over and over.

I already own the song, I do not wish to see a stupid "Buy" button cluttering up the UI.