The following site won't let me cut/paste anything, so you'll have to go there all by yourself!

:
Rolling Stones are hip to the newest "Gruvi" format.......for $40 each.
Individual tracks from the other albums on the card can be "unlocked" but they didn't reveal the price to do that.
The SD card this uses is smaller than a dime, which doesn't sound like a good idea in the real world. But I do like the idea of having all that music (MY kind of music though

) on something other than a spinning optical disc. And I think The Q would approve (Star Trek joke).