base64-encode.sh

touch "sounds.js";
echo "module.exports={" > sounds.js;

for f in ./*.mp3; do 
    echo "base64 \"$f\" > \"$f.b64\""; 
    base64 "$f" > "$f.b64"
    echo "  \"$f\":\`$(base64 "$f")\`," >> "sounds.js"
done

echo "}" >> "sounds.js"

convert a bunch of mp3 files into a js file that you could bundle in your js code. This has the effect of letting you bundle sounds into a single js file

Place it in the same folder where your mp3 files are and call it from console.

You can customize it to encode other types of too.