SELECT 
  `downloads`.`md5`,
  `downloads`.name,
  `downloads`.rating,
  `downloads`.votes,
  `downloads`.downloads,
  `categories`.name,
  `description`.description,
  `images`.image
FROM
  `categories`
  INNER JOIN `downloads` ON (`categories`.id = `downloads`.cat)
  INNER JOIN `images` ON (`downloads`.id = `images`.downloadid)
  INNER JOIN `description` ON (`downloads`.id = `description`.downloadid)