From Spencer's main-page article today (5/26):

"Sirius XM contends that they do not owe Stern any bonuses above and beyond what they have already paid. The company is seeking Summary Judgement. The company offered up several documents including a statement of facts that outlined some interesting things. One of those items of interest is that only 9% of XM’s subscribers (about 1 million) subscribed to “The Best of Sirius”. The other 9 million had no access to the Howard Stern show."