Instrument voice in Sibelius 7&8
 

:confused:Hi Guys,

I use Sibelius to write my scores, especially for piano. In the window "playback devices", there is a tab titled "preferred sounds". I see a lot of options to change the piano voice here (Beckstein, Bosendörfer, and etc), but I can's use them.(I already know how to change from E-Piano to Concert grand Piano via the mixer).
Please tell me how may I change to Bosendorfer piano or Bechstein via prefered sounds tab in Playback devices. It's very important for me to hear a brilliant piano sound.

Thanks