But a possible near term tech concept, "smart property", would enable micropayment through bitcoin when a freely downloaded, possibly encrypted song was played.  Going forward, this decapitates the power of the music industry.  Their grip on old intellectual property will remain legally strong.  

But to enforce that they will have to destroy the unencrypted mp3s of the world, which is impossible.  As hard drives and storage increase, it's not long before you will be able to store a huge number of songs (eg, "all").  That makes irrelevant peer to peer bootleg distribution for old product.  

I would say, a checkmate is coming.