You might be accurate in saying that the music is royalty free. However, you still have to buy the tracks in order to remove the audio watermarks. I can't think of a single video that I would want to make, where I'd be ok with the audio watermarks. It would ruin the dynamic flow of my video's. Thanks though Swarf, but I think I am going to stick with the Youtube audio library.
PS: I am typing on my brand new Corsair K95 Platinum keyboard, and I love it a lot