Select All / Ctrl + A

Use Cases

I want to search my media and then add all results quickly to a playlist.

Currently

I can only add each search result individually to a playlist.

You should already be able to multi-select your results (or items from a library screen). This works by manually selecting the individual items – or selecting the 1st, scroll to the last item and select that holding the shift key (⇧).

That being said… there’s an existing feature suggestion to add a “Select All” button similarly to the “Deselect All” option already available in the multi-select action bar. Unless I’m very much mistaken and you’re looking for something very different, I recommend you comment/vote in that thread in order to avoid distracting/dispersing votes (closing this thread as a duplicate).

Yeah, you are right. Didnt find it by search because the search engine sucks. Try “select all” gives a lot of garbage. I did upvote the existing FR.

Just build an “Advanced Filter” which includes all your search terms. (logical OR and AND possible)
You can save this filter as either a smart (i.e. “self-updating”) playlist or a smart collection.

2021 clean-up: duplicate