I cant remember my amiga.org password so rather than going into the other room to jump on my Windows box to retrieve it from my hotmail account I thought Id respond here (only have my a1200 and amithlon boxes online in this room, so cant access hotmail).
I finally got Boom working, albiet a little quirky. The crash was caused by having sound enabled, which kind of makes sense now that I read it doesnt support ahi. I can hopefully use nuldehpah or similar, so that's not a problem. What is a bit of a prob. though is that it still only occupies the top half of the screen, and is squashed. Is there some way to select a screenmode, or will I have to mode promote it?