one liner to move mp3 from all subDirectories to the current directory.
put commands in file movem.  source movem.

find | grep mp3 | sed -e 's/ /\\ /g' | sed -e 's/-/\\-/g' | awk '{print "mv " $0" ."}' > movem
find lists all files.
       grep only mp3
                sed substitute "\ " for all spaces.
		                      sed substitute "\-" for all -
							   awk build move command.
				                           awk   add "mv " then file then " ." meaning this directory
											 > redirect in file movem
then chmod 666 all mp3.   remove directories  usually D01 .... Dnn

from toms.homeip.net