Recently I have downloaded trial version of the Sondius SYXG-100. In the specification there is the following:

Instruments: 676 instruments + 21 drum kits/SFX kits
(XG mode : 480 voices + 9 drum kits + 2 SFX kits)

VA Sound Engine Specifications:
Format of Sound Engine S/VA Sequence System (VLR algorithm)
Maximum Polyphony: 1 voice (Last in First Out priority)
Voices 256 VL-XG instruments

But I can not use all patches and VA-plugin.
I use Cakewalk.

It seems I can use only XG-mode.
Questions:
How to receive access to all instruments?
How to use VA-plugin?