These people are in the wrong, however, as none of my works are under the license they say, and aren't to be used, remixed, or placed in commercial things for any reason. I'll probably waste 30minutes of my life contacting them about it, never hear a response, and the world will go on. Just makes me angry is all.
The internet is a faceless beast.
You didn't know when you found/grabbed/used whatever it from that site, so you can continue to use it for whatever you want. Thanks for bringing it to my attention, though.