I read about this here:
In iTunes Preferences|Advanced, the checkbox Copy files to iTunes Media folder when adding to library is significant. If the box is unchecked, iTunes remembers the location of the file (calibre's copy). If the box is checked, iTunes makes a copy of the file to its own storage. However, iTunes also modifies calibre's copy of the epub by adding a plist file. Files so modified by iTunes have been tested in the calibre viewer and in Adobe Digital Editions with no observed problems.
Recommendation: unchecked.
If you are currently using iTunes to manage other media for your iDevice, and this is checked, leave it checked. iTunes will make its own copy of the added books rather than referencing calibre's copy. Any new media you add to iTunes will be stored in iTunes, as before.
Because I use iTunes to manage all my media, I thought it best that I keep this checked. Do you think that might be the problem? I'd hate to do away with this feature of iTunes as I never have to worry about the location of my music and video files.
What do you think?
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