Just use the command line.
to move files:
mv sourcefile destinationfile
example (move something from flash to memory card):
mv /home/user/MyDocuments/.images/pic1.jpg /media/mmc1/pics/

to copy files:
The same as above except use cp instead of mv

to copy/move multiple files (all files that end with .jpg extension):
cp /directory/*.jpg /media/mmc1/pics/

or (to copy all files)

cp /directory/* /media/mmc2/files/