I use 3.3 Reader Library for PC, and own a PRS-650.
My issue is this: I often re-format eBooks with different fonts to read on the eReader. However, my eReader now takes upwards of 2 minutes to refresh after disconnecting from my PC. Kinda annoyingly long wait to see how a book came out and if I need to re-do anything. And I'm not a fan of installing fonts into the ePub itself solely to see how an eBook will look in the Reader Library. No reason to have 100 copies of Gentium on the 650 just for that
SO, my question is this: where does the Reader Library access/keep it's fonts? I'd like to add the fonts I use in my eBooks there so I can see how the eBook looks in the Reader Library *before* adding it to my 650. Thus saving much un-needed plugging-in and un-plugging of the 650.