I found this live scanner feed by accident
http://www.radioreference.com/Click on
Live audio then on Live scanners
Next click on the state of california
next click on "alameda county" if you want to listen to Oakland.
Your computer should automatically send the feed to your "windows media" screen.
SF of course doesn't have a feed ( and has anyone noticed that COPS/TV show has never, ever done a show for SFPD. But they have done them for
fresno, modesto, Sac, a whole lot of southern California, but never SF? I think because SF is wayy to liberal)
SJ does have a feed.
LAPD was really cool to listen to when they had the small riot after the Lakers championship.
I occasionally will put it on if im tired of listening to itunes, youtube,pandora and lastfm.