Dual output ffmpeg command

audio2flacm4a.sh

#!/bin/sh
#Run from root of a CD volume on OSX

album=$(basename "$PWD")

mkdir -p ~/Desktop/Music/FLAC/"${album}"
mkdir -p ~/Desktop/Music/M4A/"${album}"

for track in *.aiff; do
	newname=$(basename "$track" .aiff)
	ffmpeg -i "$track" \
		-c:a flac -y ~/Desktop/Music/FLAC/"${album}/${newname}.flac" \
		-f caf - | fdkaac -b320 -G0 --moov-before-mdat -o ~/Desktop/Music/M4A/"${album}/${newname}.m4a" -
done