First and foremost, I would be remiss if I didn't thank Saraguie, chawya22, and kantana for such immediate and helpful responses. You guys are awesome! That said, it doesn't seem I'm doing anything wrong. The great screen shot posted by Saraguie looks like my directory. Sometimes I drag and it works and the next time I get multiple messages regarding "screen locked" or cannot "create folder". Must be in the 240 somewhere...and the playing of the music cannot be "stopped" just "paused"?
Looks like you are trying to copy nested folders over. I have better luck doing one at a time. When you have the folder locked it means the folder already exists on the AK240. So use the folder explorer on the AK240 to check and delete. There is a limit to the character length of the path or filename as well. I had to truncate some filenames to successfulky copy.