Commercial FM rock radio is a washout, a racket we skip over in search of greener aural pastures. But we make an exception for KIHT-FM (96.3), commonly known as K-HITS. Why? Decent (classic-) rockin' and genial, veteran DJs, in particular "Radio Rich" Dalton. A KSHE jock from back in that station's better days (he still pulls a Sunday-night gig there), Dalton saw action all over the dial before he took over K-HITS' weekday lunch shift, 10 a.m. to 2 p.m. Spinning evergreen '60s and '70s classic rock, Dalton will comment intelligently and insightfully on what he plays -- and with the chops to back it up: He's a guitarist himself, with a deep knowledge of the music. Radio Rich is easy like Sunday mornin'.