[Iznogood]

Ah, sorry. I misinterpreted the question I think. You want to upload the app via cable from your PC to the iPod and not to upload books from your computer to the ipod? Is that correct? That could prove difficult since the iDevices are built for downloading directly from Apple store, but I think (note that I am not sure about this) that if you have iTunes, you can drag-and-drop the installation file and let iTunes install it. I don't know of any other program that kan do this since iTunes is the only program that knows the inside of your iPod. I have heard that iTunes is possible to install on ubuntu with Wine, but have not tried it myself, and can not give any guarantee that it will work