MT, do you not see "enforced" fairness as a violation of the constitutional right of freedom of speech?
If there is a demand for "progressive" radio, the market will fill it. The government has no business "mandating" fairness in broadcasting, or fining stations to finance its own radio programs.
Who gets to decide what is fair? Would you want a right-winger to make that decision? Would I want a left-winger doing the same thing? I think the answer to both questions is probably "NO!"
Regards, Shuckins