Which licence applies to Audio Analyser?
The repository carries the Apache License 2.0 and the MIT licence, and its files are marked Apache-2.0 OR MIT: you may use it on the terms of either, which come with no warranty.
Which licence applies to this website?
The website's source lives in the same repository under the same terms. Its theme, Prism, is MIT-licensed.
What about Azure and the language-model providers?
Using Audio Analyser means using those services under their own terms and pricing, with your own accounts and keys.
Anything else?
The information on this site is provided in good faith and may lag behind the main branch, which is the reference. Report a mistake through the contact page.