That's weird. Isn't stuff that's created on the air property of Howard or whatever company Howard works for at the time depending on the deal?
Howard sued CBS to get those tapes since they were made on CBS/WXRK-owned equipment. They tried to recreate some of the stuff after they started at Sirius. As we know, Howard won.
Bubba owns all the stuff from when Spice and Brent (and others) were on.