How about 'squeezing' a java-wrapper for the udp api out of webaom? What I'm thinking of is encapsulating all the requirements of the udp api (packet rates, pause times, registration and so on) into a java library to make creation of clients easier.
On a different issue I'd also like to know where to get the source of webaom
why not put a link to the source on the wiki, epoxi? or do you want people to ask for it before you provide it? ... would be fitting to have it next to the Applet, Jar, Webstart links ... in fact, I'll put it there unless you object (in which case all you need do is remove it yourself ^^;)