"A band’s artwork acts as an anchor for an entire campaign. And it’s not just the traditional square artwork we know and love (and of course all the other physical manifestations such as posters, t-shirts and other merch). It’s the interactive flash banners prompting customers to go buy at iTunes, it’s the backdrop to a ‘tweet for a track’ microsite, it’s an avatar, it’s an image reposted on a hundred blogs. It can underpin a band’s whole presence on the web."
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Dave Haynes » Why Album Art Still Matters
That’s pretty much the reasoning behind developing the SoundCloud Artwork Player.