Now of course the upcoming Beat Blocks isn't the first game to turn your music library into a game, with Audiosurf, and Beat Hazard being popular releases with that feature, but it does seem to be the first game to forego the action and opt for a puzzle experience... well if you consider match-3 games to be puzzle games of course.
Releasing as a free game, you will be able to play three of your own library tracks before the game requires a payment of $0.99 to continue. It looks to be a solid match-3 experience, and the inclusion of levels based around your favourite songs is always a draw. We'll see if the game delivers what it promises on July 22nd.
In the meantime, have a look at the trailer.