I just drag & drop with my NWZ-A865... I didn't install or use the Go Media software that came installed on the device.
You can sync with ITunes but you don't have to. I don't even have it installed on PC.
I am trying to discover if the Sony NWZ-A866 is a true Drag and Drop. I keep reading that it comes with the "Go Media" application that allows one to drag and drop, and it is confusing as, in my opinion, it makes it sound like you NEED this software installed on your computer before you can drag and drop. I do not want to be stuck with a 'Sonic' style application requirement whenever I want to move music around. If I am at someone else's computer, I want to be able to manage my music. If anyone is able to point me in the right direction, it would be appreciated. Cheers, Walter.