I have several external RAID arrays that appear as separate drive letters in Windows. I agree that if I copy 2 files to the same drive letter, the second file should be queued. But if I copy the second file to a different drive letter, it should open a second copy window and copy both file simultaneously. Right now, copying a second file to a different drive letter queues behind the first. Of course, you could have this as an option, but I think this should be the default behavior. I could not find this option in the app.