I’ve been burnt by filesystems when moving around between external drives and FTP, so while I’d strongly prefer if there was a universally accepted way to include arbitrary metadata in the file itself, I’m instead using a separate metadata file. My metadata files are named exactly the same as the original, including their original extension, with a “.metadata” appended, to minimize confusion, and use INI/TOML format to maximize the chances that I’ll be able to understand and find tools to easily parse the files after several decades.

I’ve mostly used YouTube Music, though my friends use Spotify, and I think the addition of being able to watch/listen to YouTube videos in Music is huge. Spotify is great if you only listen to label-published artists, but when you want to include tracks and mixes from indies, YTM is just the only way to go

https://www.roleplayingtips.com/feeds.php

I’m a big fan of RoleplayingTips, which has been running for decades, now. There’s a ton of useful information in there and he features different people all the time