AAC streamer from pipe
parec -d alsa_output.pci-0000_00_14.2.analog-stereo.monitor --rate 48000 --format s16le --channels 2 | fdkaac -p 2 -m 0 -b 131072 -w 18000 -a 1 -f 2 -C -G 0 -I -S --title Stream -R --raw-rate 48000 --raw-format S16L --raw-channels 2 -o - - | aac-streamer