ref: 3ba85a07e523d7b0f8ef66011b8c811bc38a0e5e dir: /bin/2mp3/
#!/bin/rc play -o /fd/1 >[2]/dev/null |\ audio/pcmconv -i s16r1c1 -o S16r1c1 |\ audio/mp3enc -r -v -q 0