Robert Keller wrote: Bob, We don't post on top. Quote the relevant part and place your message below, because of our mail archive ;) About the licenses. I think Impro-visor should have the same license of the GPL source you use (Jmusic or something(?)). About setting up a mailinglist, one for users one for developers, that's pretty easy. I think this should help you: https://lists.sourceforge.net/lists/listinfo Regards, \r