No problemo man, late reply from myself here lol.
Cool that you're improving the YT player. :)
As for the book-reader, this space room is best suited for it, i wouldn't really be interested in a castle or something else, sorry. ^_^
Just one further suggestion, for the PDF reader: Could you tweak it so it can properly read/open sub-folders? I created some sub-folders but unfortunately they're not showing up.
Keep up the great work!