To convert those .note files into properly working .svg files is just a matter of a few lines of XSLT applied on it. As a linux user, I have just made myself a little script to do that for all the files at once.
In case anyone likes it, you find both at
https://github.com/stegro/sony-prst2-tools
You may apply the XSLT file from my repository to the .note files with any other tool, too, of course, there surely are some for all operating systems.
*long live the PRS-T[12]!*