I am using the full collections and soundsets.
The ppp, and pp, dynamics are inaudible and the lowest usable dynamic is p.
On this page listen to VSL Sibelius dynamics at the bottom. Piccolo and two flutes playin crotchet Cs starting ppp, pp, p, mp, mf, f, ff, fff, ff, f, mf, mp, p, pp, and ppp. 15 notes. You can just here the ppp and the pp at the start but they are far to quiet to use and oddly the last pp and ppp you cannot hear at all (so you are only hearing 13 notes).
This isn't right. Is it something i'm not doing correctly? Is there something I can do about it so that all the dynamics are useable?