While The Beastie Boys and Amy Winehouse charge over $50 for a Summerstage concert, DJ Spinna will be performing on 07.07.07 with Cinematic Orchestra, RAMP, El Michels Affair and Kevin Michael for a free show.  The event which is being presented in part with Giant Step, will run from 3:00-7:00.  More info on this show and other free Summerstage shows is available at their website.