David G. Friehling, auditor for Bernard L. Madoff, won plaudits from federal prosecutors, and because of that he will not serve any time in prison for his role in the financial fraud, the New York Times reported today. A federal judge yesterday sentenced Friehling to a year of home detention and another year of supervised release. Judge Laura Taylor Swain of Federal District Court in Manhattan noted that Friehling had cooperated extensively with federal prosecutors, including testifying for several days during a lengthy trial last year that resulted in the convictions of five former employees of Madoff’s securities firm.