ref: 8a059a242e7f6ed5bdfdac4d3e1c6642c401a307 dir: /bin/2mp3/
#!/bin/rc play -o /fd/1 >[2]/dev/null |\ audio/pcmconv -i s16r1c1 -o S16r1c1 |\ audio/mp3enc -r -v -q 0