Like a knight in shining armour and headphones...
This first link is the tune you're talking about, if I'm right. It used to be played at the end of broadcasts, and often still is. I'm not sure about it being playing in the stadium though. I don't have a clean version to hand right now so I've just cut it straight out of last Saturday's broadcast, so be aware it has us talking all over it.
The second link is a very funny interview with Duane which I intended to put up after the game, and never did.
Remember, Radio Diamonds broadcasts every home game from 11 and lots of it (despite me being very biased) is pretty good! Especially my and Phil's show, 2-3 if you're asking

I'll even play it this Saturday if I get enough requests...
http://www.easy-share.com/1909493485/radio
http://www.easy-share.com/1909493481/duane