I'm thinking of getting Garritan World Instruments at some point but I understand there is no Sibelius soundset for it. How would I go about writing music and using the world instruments, would I have to export the Sibelius score as a midi into something like Cubase and run World instruments in there? I understand some of the exotic instruments can't be written for by conventional notation but the banjo, fiddle, mandolin would for example, but I assume as no soundset I can't just find them with Sibelius like the GPO4 instruments?
On that page, a user describes his method of going straight to an instance of Aria and setting up the World instruments he wants to use - but as he says, using his method means the instruments have to be set up each time. I don't know why he hasn't put a manual sound set together. His post begins with the words "The instruments will work with Sib 6.2 with a certain amount of Bodging."