The MC has been released from the hospital and the post-operative prescription for R&R will keep Rhyme & Reason off the road for at least three months.

He’s been treated for fifth-degree acromioclavicular joint dislocation, and doctors performed AC joint reconstructive surgery, which was declared a success.

Mike D is now under doctor’s orders to limit physical activity and keep his shoulder in a sling for four to six weeks. The prognosis is good and the Beastie Boy should be fully recovered in three months.

There is still no word about when the postponed tour might be rescheduled, but Rhyme & Reason ticket refunds are available from Ticketmaster or at point of purchase.

Mike D may be down, but the others on the top of the ill-fated co-bill are staying busy while he recovers.

Adam Yauch, aka MCA, is overseeing an ambitious Beastie Boys DVD project, “The Sounds Of Silence,” set for release October 10. The two-disc set will feature 18 videos and more than 100 video angles and audio tracks switchable at any time during playback, allowing hours of possible image and sound combinations.

Rage Against The Machine isn’t exactly sitting still, either.

The band will perform at two major British music events: the Leeds Festival on August 26 and the Reading Festival the following day. RATM is also slated to perform for the MTV Music Video Awards September 7 at Radio City Music Hall in New York City.

One rumored, but not confirmed, gig is an expected appearance by the anti-authoritarian RATM outside the Staples Center in Los Angeles during a planned demonstration against the Democratic National Convention on August 14.

President Bill Clinton is to deliver a speech that night, and labor and other activists – including Hollywood’s Film and TV Action Committee – are gathering support for mass demonstrations