TIMES PINCHES STAFF SALARIES By KEITH J. KELLY December 13, 2008 -- New York Times Publisher Arthur "Pinch" Sulzberger Jr. yesterday said he is freezing salaries for all non-unionized employees through 2009. Separately, the company has sacked the three nighttime DJs at WQXR-FM, the Times-owned classical-music radio station in New York City. As a result, the gaps between songs will now be filled with recordings that direct listeners to the station's Web site for more information. The cutbacks and salary freezes are the latest sign that the New York Times Co. expects a difficult slog well into next year. The...