Preparing your Mesh
Import your FBX into Blender and duplicate it. Because you only want to export the modified mesh, create a new collection and hide the original mesh inside it.
Unity Setup
Add VRCFury and AudioLink to your project, then import the Unity package and your mesh.
Material Properties
5 items
Allowing for more vertices
To allow for more vertices, you need to adjust the resolution so that it can hold the needed number of vertices.