Did you notice the followup article on the page? It appears that Pink Floyd won the case. I suspect that this suit may have been prompted by commercial reasons, rather than artistic ones. If you allow listeners to download individual tracks, you might sell only a couple from a given album, generating only a couple of dollars revenue. If you force them to buy the whole album, you can charge ten bucks or so. Sure there are some who will choose to buy nothing rather than buy the whole thing, but in the case of a well-established group like Pink Floyd, it may be that they would make more money by insisting on a larger packaging.