This is such a basic feature that I would assume Sibelius (pre-Avid) would have put this in here. I'm scratching my head over this one:
I have setup a VST instrument (I guess AU in this case since it's open in Sibelius) :
http://i.imgur.com/2at55.jpg
All channels within the instrument are set to Channel 1 :
http://i.imgur.com/ZemmM.jpg
Why then is this area greyed out, I can't assign the top track to channel 1 within Kontakt 4? I just don't get this, it's so simple...
http://i.imgur.com/CnVTC.jpg
-Tyler
Why can't I assign MIDI channels to staves?
Sib isn't a DAW and has its own unique way of working with VSTi's. A very good read (or two or three......) of sections 4.14 and 4.15 of the Reference and viewing a few of the blogs about this subject is the way to go. Soundsets are required for seamless operation and I'm not the expert in this. All I can do us point you in the right direction. It can be done - I'm told!