Pasting a song from a YouTube Mix (watch?v=…&list=RD…) imported song
after song: yt-dlp takes the whole list by default, and a Mix runs to
thousands of rows and loops back on itself, so the linked song came in
again and again with nothing on screen saying why.
Now anything but a plain song link is listed first (--flat-playlist,
streamed into the dialog). One song goes straight through. Several become
a checklist: a song-in-a-list link ticks only its song and offers Just
This Song without waiting, and a playlist link ticks everything. Rows are
de-duplicated by id. The chosen songs download by their own pages, never
the list link, and more than one gets a per-song progress window (Hide
keeps downloading; the status-bar line brings it back).
Import from URL now gets past YouTube's "Sign in to confirm you're not a
bot": a run that downloads nothing for that reason retries once with
yt-dlp's --cookies-from-browser (Firefox first), and a browser that worked
is remembered in this machine's config.json so later imports send the
cookies from the start.
trav