The mdfind command consults the central metadata store and returns a list of files that match the given metadata query
mdfind -name mp3
Rsync copies files either to or from a remote host, or locally on the current host. Uses the rsync remote-update protocol to greatly speed up file transfers when the destination file is being updated.
rsync -av "/source" "/destination" //a = copy metadata, v = verbose (show each filename)