Metallica and Music Downloads -- Harken Back to the Old Napster

So Metallica has joined iTunes after a long holdout. These guys are nothing if not shrewd businessmen. However, it did take them a long time to get on the biggest music bandwagon EVER. Well, EVER, besides the old Napster; you know, the one where the kids could download expensive music for free over the internet on an old, albeit new then, Peer to Peer network?