My interpretation is that he tries to find the way to switch sounds in G-Player from Sibelius Thanks for the replies , yes in g-player i have found someways of connecting
i.e 1) program change ,2)CONTROL CHANGE

,3)key switch which is no good for what i want to do ,4)Velocity which iam sure will work fine HOWEVER i am not sure if i use this if it will interfere when notes in sibelius are played in different dynamics? ,5)Random which sounds to out there for me .
So control change in g-player and a midi envelope on my track in sonar and she works fine .
However iam glad i asked this question so i can dive a little deeper into sibelius
In Sibelius you can also use note key switches through a user defined sound set I have created manual sound sets in sibelius and done some reading in the manual on what your suggesting , and would love to use this feature ,
Can you point me to the page in Sibelius manual or better still post some quick steps on achieving this please? As this would be much more useful for me .
Regards