Select the files you want to copy by using the check boxes.
Navigate to the directory you want to copy to (your selection follows you)
Press the 'double menu' button at the bottom left of the app
Press paste selection.
Selection follows you. So if you select files in /sdcard/downloads and select 2 things, then go to /sdcard/ringtones/ and select 2 things they are all selected together. You will have 4 files in your selection and any actions you take on one you do to them all.
That's pretty much it. Hope this helped some of you.