Hooray to Helix!

Parallel is great!

Alternatively your second command can be written as: parallel "copytags {1} {2}" ::: *.flac :::+ *.mp3.

Also it is nice to exec commands on multiple devices.

Article is wrong on Niri, the link is wrong, and it is not based on wlroots as suggested but on smithay.

In the open source world, you show respect by forking. Not by licking the ass of data monsters.