I'm not sure if I'm in the right section for my particular post, but I just recently installed the Garritan Instant Orchestra on my PC. My OS is Windows 7, and what I want to do is use the IO in conjunction with Sibelius 6. I've updated my ARIA Player to the latest version, and so forth, but when I open Sibelius, the only sound sets recognized are Sibelius Essentials (of course!), and the Garritan Personal Orchestra, which I've been using as well.

Can someone help me?

Thank you, in advance.