There is no "copying files over" with iDevices. For a long time there was "gtkpod" / "libgpod" which reverse-engineered iPod protocol and database format to loa

There is no "copying files over" with iDevices. For a long time there was "gtkpod" / "libgpod" which reverse-engineered iPod protocol and database format to load songs on an iPod. But on later iPods it involved an extracted Apple signing key, and Apple issued (successful) DMCA takedowns on websites which provided these keys. Most pages on the gtkpod website currently appear to be defunct, probably because it's been impractical to make it work with iPhones.