I configured my Foobar2000 to monitor some folders for media. How to play those folders? I'm not finding the button....
To get a playlist populated by the media library:
By the Album List panel:
You could right click the branch and choose the appropriate action (e.g. Add to current playlist / Send to new playlist). The highest branch is All Music... If the "library viewer selection playlist" is enabled (look at Molly Answer) the playlist will be populated when you select a branch.
You could also change double & middle click actions, and tweak the different views with the title formatting syntax in
By the Search panel:
Here you could use the query syntax and Enter to send your search in the actual playlist and play it. Use Right Click in the list for other options...
Additionaly: with these two panels you could create AutoPlaylist (auto populated): use the three dots in Search and right click in Album List.
And the component Facets could interest you.
Did you enable the Library Viewer Selection Playlist?
Then all your tracks in the monitored folders should be shown in a play list called "Library Viewer Selection" (you can rename it if you want).