davs18510/Librosa.PY — reverse-engineered prompt

Build me a simple local web app called Librosa.PY. I want it to feel like a lightweight audio exploration tool that runs in the browser with a small server behind it. Keep the interface clean and beginner friendly.

A person should be able to open the page, load an audio file, play it, and see some useful visual or summary information about the sound in a way that feels polished, not like a rough demo. Use sensible defaults for anything the project does not already define, and keep the code easy to follow since this looks like a small project. Add basic styling so it looks complete, and make sure the front end and server work together smoothly.

Please also make it easy to run locally with clear startup steps, and include a short note in the README explaining what the app does and how to use it. If you need to, look up current docs online and fill in the gaps with practical choices.