Or stop being an idiot and consider using self-hosted media solutions that handle the metadata for you. Like Plex, Jellyfin, or any of the roughly three dozen options here.

The right torrent client will also allow you to pick and choose which files to download, and you could even go a step further and add a new source provider to e.g. Lidarr that would handle these torrent files and pick out the music you want.

Result?

• no need to transcode to MP3 (not sure why you’d want to do that anyway when OPUS files can be played by practically any modern device)
• no need to manually do any namings
• no need to manually get metadata
• no need to get 300TB storage

Hell if you really wanted to, you could even vibe code a solution that includes a torrent client, these music torrents, and a web interface + API that provides all the necessary info for existing clients to be essentially used as a quasi Spotify alternative, only downloading music you actually listen to.