I must admit I got stuck on the first hurdle using muffins (the persistence service). The examples state "import javax.jnlp.*; " but that immediately raises a not found error. I found out elsewhere that it's included somewhere in the source but it gave no clear example of how to actually use it.
I'll admit I'd prefer it if they had a simple class I could import that simply allowed you to get or store name value pairs for your given URL. I'm currently writing things back to the server but it's a PITA
I guess these developers spend more time coming up with a cute name (and never a name you could hope to guess in google) than provide a simple interface that numb-skulls like me can use.