KJZY (K-Jazz) has been a Smooth Jazz station that serves Sonoma County, CA. The station has been with the format for over 15 years. Here is a re-post of an aircheck of the station recorded back in 2000. It is 192/44.1 and at this link:
http://www.4shared.com/folder/lFGH8C-1/KJZY_Airchecks.html
http://www.4shared.com/folder/lFGH8C-1/KJZY_Airchecks.html