How do you add sound fonts to a Proffie v3.9

I don’t know how you are supposed to install sound fonts. Do you have to install additional files in the config file or not. Also blade styles are their any specific tutorials on how to do this

I recommend reading this page, go step-by-step and read through everything.

Or this:

To use the workbench do I need a data transfer cable?

Yes you do.
(Unless you have a bluetooth chip in your saber.)