[Madeindjs]

I found a tool named [Lossless Audio Checker](https://losslessaudiochecker.com) : "A utility to check whether a WAVE or FLAC file is truly lossless or not".

I was so sad that this project is not open-source but their Research papers give some interesting clues about detecting bad quality files.

On my side, I used it through a [Bash script](https://gist.github.com/madeindjs/d5e3949313b141f2e5eea62b98...) to detect bad files in my library. The tool produces a lot of false positives since it triggered on some High Res audio musics I bought on Qobuz.