What the music industry really needs to do in order to keep their business model alive is distribute albums exclusively on individual ear buds. This will make it impossible to copy and will guarantee that only one person can listen to the album at a time. Even better, if they could somehow incorporate technology that recognized the purchaser's ear drum print, they could eliminate the possibility of said purchaser allowing his friend to listen to the album.
Obviously this will cost a lot in development and production, as well as marketing, so they'd probably need to price each album at around $60. But that's the price we'll have to deal with to ensure that no one unfairly listens to music they didn't pay for.