Go to the NEW FORUM
Anybody knows a site where i can download singles artworks.Thanks
Rateyourmusic is a valuable source for art works, but maybe you're asking about new releases and I don't know is RYM could be useful for that matter.
mega-search.net is an excellent search engine, especially if you are looking for new releases.
Try www.discogs.com
RYM for singles absolutely. New releases and all. Although, Google image search is usually good for new singles. The only problem with RYM is that you have to click a million times (three) to get to the full resolution file.
en.wikipedia.org