I'm trying to find recording Benny Goodman- Monday Monday? Any ideas where I can find this?

Try ebay. There's a Buy It Now lot (# 180082897729) with that piece on the CD.

try you tube my friend

I find that the free program Limewire is a great source for finding the songs you like. I've got all sorts of stuff that I would never be able to find anywhere else on the net e.g. Grease karaoke. Go to www.limewire.com for the download that is spyware and adware free.
P.S. You can purchase different versions of Limewire, so if you've got the cash go for one such as Limewire Pro.