I am using PiFmRds on my raspberry pi 3a+ (https://github.com/ChristopheJacquet/PiFmRds), and I am trying to live broadcast with a mic and a USB sound card. The command is:
sudo arecord -fS16_LE -r 44100 -Dplughw:1,0 -c 2 - | sudo ./pi_fm_rds -audio -
When I run it, though, I get this error:
What can I do to get it to work?