what does this mean? how do i make it available in my path?

[vlisna789]

"Detects speech in a microphone input stream. This command requires that you have SoX
installed and available in your $PATH. See
https://www.npmjs.com/package/node-record-lpcm16#dependencies"

i downloaded what was in the link, but what does make it available in my path mean?

[fhinkel]

If the issue still persists, please file it here. Thank you.