….On Tuesday you may want to check out WSUM-FM/91.7, the UW-Madison student radio station. As was the case for one day last January, the station — with many students out of town — is being “hijacked” by old guys, including Madison radio veterans Tom Teuber, Rick Murphy and Dave Benson. The day’s programming — from 10 a.m. to 6 p.m. — will be coordinated by UW-Madison alum Bruce Ravid, who now lives in Los Angeles, where he runs an executive search firm. Ravid spent years in the music industry, including a stint as promotions director for Capitol Records.