If you can get your hands on one of these dual firewire/USB to 30 pin dock cables, I think it will solve the limit of loading 800 songs at a time. I had issues with my SD card iPods where I had to load in batches or the iPod would drop out. Once I used this to plug the iPod in to the laptop via USB, and then plugged it into the wall with the firewire at the same time, it was able to load 90 GB of music in one operation. If you do it with the iPod open, it may help disipate the heat better. My iPod got warm, but never had an issue. Im pretty sure the reason this works is because it supplies the iPod a steady and sufficient amount of power rather then relying on the battery while transferring files.
Edited by DR650SE - 6/16/14 at 7:16am