Sounds like you're talking about the late David Brudnoy. I think Brudnoy considered himself a libertarian, and he was pretty hard on Clinton. (Ooops, maybe not the best choice of words.)
But we had a weak signal for WBZ so didn't listen often, and I never heard about this call. What exactly did Clinton scream at Brudnoy?
Yes, it was David Brudnoy. Clinton called in unexpectedly. He told David that he, Hillary and his daughter went to Martha's Vineyard to get away from the politics in DC and he was angry to hear the Monica discussion on WBZ. He told David that in the past he had enjoyed listening to WBZ and had a lot of respect for the station and (he mentioned name of the owner or manager of the station). He went on to say that his daughter was also listening and did not appreciate the content of the discussion. He rambled on and on, his voice getting louder to almost a yell and finally hung up. That was it. There was silence in on the radio as David Brudnoy obviously collected his thoughts.