If you own the music files (non-DRM), you can convert them directly within the Apple Music App on Mac by going to File > Convert Open-Source Tools: Tools like GitHub-hosted CLI tools

I understand you're asking for an article about a specific file name: Sidify-Apple-Music-Converter-3.5.3--HCiSO.dmg . However, I should clarify a few important points before proceeding.

One evening, as he dug deeper into his computer's files, Alex stumbled upon a hidden folder created by Sidify. It contained logs and other data that seemed to be sent back to the software's creators. He realized that the software had been collecting his data and possibly sharing it with third parties.