Humorist Al Franken has signed on for another two years with Air America, the liberal radio network which had a shaky launch this year.

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The contract extension means the network is here to stay, reported the New York Post.

"I have re-upped with Air America in order to spend less time with my family," joked Franken, who airs at noon on WLIB opposite conservative powerhouse Rush Limbaugh on WABC.

Air America has shown initial ratings promise in New York and Portland, Ore., but the first meaningful ratings -- Arbitron's three-month fall survey -- won't be known until next month, the Post reported.

The network also got a $13-million infusion from new investors, officials said.