This has been mentioned before on our site, but it can't be mentioned enough! They can all be downloaded through the link Aloc gave. I mentioned it last year - see post #71:
It was also discussed here, where mention is made of a box set that compiled jazz musical highlights from the shows:
For those just interested in the music, the box might be a better bet. The shows themselves are of their time: a mix of music, comedy, shout-outs to the troops, and whatnot, with Master of Ceremonies Ernie "Bubbles" Whitman throughout. It takes a lot of time to listen to all of them. The box might have a little better sound quality, since it was worked on by Wally Heider.
A discography of the Jubilee series can be found here: http://home.swipnet.se/dooji/jubilee.htm