I am an experienced musician but relatively new to using computers to produce music.
I have Sibelius 5 and various Garritan sound libraries (Personal Orchestra 3, Concert and Marching Band) running under the Kontakt 2 player.
While some of the sounds sound fine (percussion and keyboard instruments particularly, for example) I am very disappointed with the quality of sound I am getting for the many other instruments, especially brass instruments. These often sound little better than the inbuilt general midi instruments.
Is there a comprehensive beginner's tutorial somewhere that explains how to set up my software to get the best realistic sounds out of such samples?