I transferred several DJVU books to Stanza, totaling about 3 to 4 gigs. The Stanza folder is located at the bottom of the "App" tab in iTunes. None of the DJVU books appeared in my iPad, and none of them are shown in the Stanza folder under the "App" tab in iTunes. But the SPACE is taken!? 3 to 4 gigs! Now WHERE are the DJVU files/books!? I need to get the space back, at the least! Anyone could help? Thanks!