I've posted sound files to "The Seinfeld Chronicles," �The Apartment,� �The Statue,� �The Baby Shower,� and �The Chinese Restaurant� to my webpage. Check out the link on http://www.angelfire.com/de/unknownuser/seinfeld.html
I also have other sound files from the top episodes (in my opinion) and can get almost any sound file upon request.
Finally, I posted a script that I submitted to that Free Jerry contest, which I think is much more funny than the one that actually won. Let me know what you think about it.