title: trim and concat audio files in Node.js
body: <p>I want to trim and concat several audio files in Node.js. I found <code>FFmpeg</code> and it looks like it does what I need, but I don't know how to use it in Node since the installation is through <code>apt-get</code>. Theoretically, I can use what's called <code>child_process</code> to execute several commands from bash, but I'm not sure if this is performant.</p>