Not sure if it will help? But just yesterday I dragged an ePub file from the source folder directly onto the iPad in ITunes and I worked well
Handbrake is nice just expect it to take 10 hrs to encode on a slow comp.
Filebrowser will let you view photos over a network, but not transfer them. WTH
Dropbox sounds ok, but it would be cool to just transfer over wifi. You would have to waste time uploading to dropbox 1st.
My cheap android tablet...
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