Creating playlists is ok but doesn't work when you're downloading from multiple videos from different channels or individually. I'd like to be able to view my downloads in date order of when they're published on the internet (not when I download them).
A timestamp would be perfect for this - by extracting the publish date and appending it to the filename would help a lot. e.g.:
YYYY-MM-DD - channel name - video name.mp3
an existing browser plugin does this, their documentation can be found at:
https://github.com/YePpHa/YouTubeCenter/wiki/Filename